• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Home
  • About
  • Recipe Index
  • Mug Cake Recipes
  • Military Care Packages
    • Email
    • Facebook
    • Instagram
    • Pinterest
    • Twitter
menu icon
go to homepage
subscribe
search icon
Homepage link
  • Home
  • About
  • Recipe Index
  • Mug Cake Recipes
  • Military Care Packages
  • Privacy Policy
  • Disclaimer
    • Bloglovin
    • Email
    • Facebook
    • Instagram
    • Pinterest
    • Twitter
  • ×
    Home » Recipes » Brownies/ Blondies/Cookie Bars

    Black and White Bars

    By Wendy Sondov · Published: May 18, 2024 · Modified: Jul 26, 2024 · This post may contain affiliate links · As an Amazon Associate I earn from qualifying purchases.

    Jump to Recipe

    Black and White Bars are chewy double chocolate brownies topped with vanilla , white-chocolate blondies . These delicious bars are ready in under an hour for special occasions or everyday enjoyment.

    Serving platter of Black and White Bars, blondie layer topping  a brownie layer.

    Why you'll love this recipe

    • Melted chocolate in the dough gives these bars extra vanilla and chocolate flavor.
    • This easy recipe makes bars that stay wonderfully soft and chewy for a week.
    • Simple zigzag decorating with melted chocolate makes these treats an eye catching addition to special occasion dessert trays.

    Black and White Bars are the ideal treat when you can't decide between vanilla and chocolate. With these easy bars you can have both.

    Stack of two bars from the side showing the layers of blondie top and brownie bottom.

    Ingredients

    Ingredients: flour, eggs, butter, white chocolate, semi-sweet chocolate, sugar, chocolate chips, salt, vanilla, espresso powder, sprinkles.

    Instructions

    This is an overview of the instructions. The full instructions are in the recipe card below.

    Bars

    Instructions: combine ingredients, mix chocolate batter, spread chocolate layer in pan, top with vanilla layer.
    1. Combine the ingredients to form the batter.
    2. Place 2 cups of batter in a medium bowl and mix with melted semi-sweet chocolate, espresso powder, and chocolate chips. 
    3. Spread the chocolate batter into a parchment lined 9 inch x 13 inch pan.
    4. Mix the remaining batter with the melted white chocolate, and spread over the chocolate batter in the pan.  Bake.

    Decorating

    Decorating instructions: cut into squares, add melted chocolate zigzags and sprinkles.

    Would you like to save this?

    We'll email this post to you, so you can come back to it later! Plus, you’ll get more great recipes and tips from us each week!

    1. Lift from baking pan and cut into squares.
    2. Place melted chocolate in small ziplock bags and zigzag drizzle over the squares. Add sprinkles immediately before chocolate drizzle sets.

    Storage

    Store in an airtight container at room temperature for up to 1 week.

    Four squares of Black and White bars decorated with melted chocolate zigzags and sprinkles.

    Tips

    • For decorated bars without meltable topping, press the jimmies sprinkles into the top of the bars before baking.
    • When longer freshness is needed for shipping, wrap the entire pan of bars without cutting into squares or cut only into two large pieces. Wrap well and mail with a plastic knife included.
    • Chocolate chips are made with ingredients to inhibit melting. For best results, use melted chopped chocolate bars for the batter and for the drizzle.
    • Decorate with melted chocolate after cutting into squares to avoid cracking the firmed chocolate drizzle.

    Related recipes

    Butterscotch Blondies will amaze you with how quickly you can bake something so delicious!

    Coconut Milk Toffee Blondies are golden brown bars with a soft, chewy texture, white chocolate chips, and a touch of crunch from toffee bits.

    Sugar Cookie Brownies have heart shaped sugar cookies that bake right on top of the fudgy brownies. It's two desserts in one!

    Surprise Inside Brownies will be the favorite for any patriotic celebration!

    This delicious recipe for Lemon Lime Bars makes chewy cookie bars with two layers packed with citrus flavors.

    Root Beer Bars are thick, chewy cookie bars that taste like an ice cream soda.

    Chocolate and vanilla cookie bars on a plate.

    Ready to bake? Join the free membership group to get new recipes and a newsletter delivered to your inbox! You can also stay in touch on Facebook, Pinterest, and Instagram. I’d love to stay in touch!

    Black Bottom White-Chocolate Bars

    Black and White Bars

    These chewy bars have a double chocolate brownie bottom topped with a layer of white chocolate blondie.
    5 from 2 votes
    Print Rate
    Course: Dessert
    Cuisine: American
    Prep Time: 20 minutes minutes
    Cook Time: 35 minutes minutes
    Total Time: 55 minutes minutes
    Servings: 24
    Calories: 265kcal
    Author: Wendy Sondov
    Adapted From: "The Joy of Cookies" by Sharon Tyler Herbst

    Ingredients

    Bars

    • 1 cup plus 2 tablespoons unsalted butter room temperature
    • 1 ¼ cup granulated sugar
    • ½ teaspoon salt
    • 2 teaspoons vanilla extract
    • 6 large eggs
    • 1 ¾ cups all-purpose flour
    • 3 ounces semi-sweet chocolate melted and cooled slightly
    • 2 teaspoons instant espresso powder
    • ½ cup chocolate chips semi-sweet or dark
    • 4 ounces white chocolate melted and cooled slightly

    Decorating

    • 2 ounces white chocolate melted
    • 2 ounces semi-sweet chocolate melted
    • ¼ cup brown and white jimmies sprinkles

    Instructions

    • Preheat oven to 325° F. Lightly coat a 9”x 13” baking pan with cooking spray, then line with parchment paper extending over the edges. Lightly spray the parchment paper with additional cooking spray.
    • In the bowl of an electric mixer, cream together the butter, sugar, and salt for at least 3 minutes, until light and fluffy.
    • Add vanilla, then each egg individually, beating well between additions.
    • Gradually mix in flour, just until incorporated.
    • Measure 2 cups of batter into a medium mixing bowl. Add the melted semi-sweet chocolate, espresso powder, and chocolate chips. Stir to combine.
    • Spread the chocolate batter evenly in the prepared baking pan.
    • Add the melted white chocolate into the remaining batter and stir to combine.
    • Gently spread the white chocolate batter evenly over the batter in the pan, forming a vanilla layer.
    • Bake for 30-35 minutes, until a toothpick inserted in the center of the pan comes out clean. Don't over bake. The top will be very light.
    • Cool completely in the pan.
    • Once cool, use the overhanging parchment to lift the cake onto a cutting board to slice into bars.
    • Serve plain, with powdered sugar, or with a drizzle of melted chocolate.
    • Store in an airtight container at room temperature for up to 1 week.

    Notes

    • For decorated bars without meltable topping, press the jimmies sprinkles into the top of the bars before baking.
    • Chocolate chips are made with ingredients to inhibit melting. For best results, use melted chopped chocolate bars for the batter and for the drizzle.
    • Decorate with melted chocolate after cutting into squares to avoid cracking the firmed chocolate drizzle.
    •  
    Packing tips
    • Double wrap pairs of bars in plastic wrap before placing in airtight containers or ziplock bags.
    • For longer shipping times, do not cut into bars. Wrap the entire cake, first in foil to keep the bars from drying out, then in plastic wrap for an airtight seal.
    • Include a plastic knife in the care package.

    Nutrition

    Calories: 265kcal | Carbohydrates: 29g | Protein: 3g | Fat: 15g | Saturated Fat: 9g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 0.4g | Cholesterol: 66mg | Sodium: 73mg | Potassium: 96mg | Fiber: 1g | Sugar: 21g | Vitamin A: 330IU | Vitamin C: 0.04mg | Calcium: 31mg | Iron: 1mg
    Tried this Recipe? Pin it for Later!Mention @TheMondayBox or tag #themondaybox!

    First Published: May 23, 2015. Last Updated: May 18, 2024. Updated for additional information and better reader experience.

    You might also like:

    Lemon Lime Bars Stack of cookie bars with chocolae chips inside.Chocolate Chip Cookie Bars Chocolate Chip Oat Bars Squares of Root Beer Bars on top of licorice candies on a plate.Root Beer Float Bars
    « Coffee Cookies
    Lemon Lime Bars »
    • Share
    • Tweet

    Reader Interactions

    Comments

    1. Suzanne Rudge (MapleMouseMama)

      May 29, 2015 at 9:44 pm

      What a lovely post Wendy! Congrats on the blog anniversary. That is an amazing accomplishment! And congrats on having a child graduating from college soon. Another great thing to be proud of. I must say this recipe does look fancy and yummy, all at the same time 🙂

      Reply
      • The Monday Box

        May 29, 2015 at 9:48 pm

        Thanks, Suzanne! I have been amazed a lot lately. Blog 3 years old?! Really?! Son graduating college?! Really?! Lots to be awed about. 🙂

        Reply
    2. Harriet Emily

      May 29, 2015 at 11:37 am

      Wow Wendy! Now this is one perfect, heavenly dessert. They each look so beautiful and the recipe sounds absolutely divine! I really love the sprinkles and icing drizzle on top. These will be the perfect treat for me to make over the weekend, thank you!

      Reply
      • The Monday Box

        May 29, 2015 at 12:22 pm

        Thank you, Harriet Emily! These bars really do taste as good as they look! 🙂 An added bonus is that they stay fresh for over a week!

        Reply
    3. Mir

      May 28, 2015 at 8:13 am

      Wow, that's quite a milestone! Congratulations on your big 3. I'm taking it one year at a time, and it's always a challenge, but rewarding as well.
      Your work is truly lovely. These bars are a perfect example! They're delicious, I'm sure, but also so beautiful!

      Reply
      • The Monday Box

        May 28, 2015 at 8:18 am

        Thanks, Mir! Like you, I am taking blogging one day at a time. As long as I am still enjoying the ride, learning, and growing, then I will keep blogging. 🙂 I appreciate your kind words. These bars are as tasty as they are pretty. They made it to my favorites list! 🙂

        Reply
    4. Reeni

      May 27, 2015 at 7:59 pm

      A huge congrats on 3 years Wendy! And congrats to your son too! I bet those boxes were something he really looked forward to. I think you're pretty amazing for what you do. These bars look absolutely delectable - I'm a huge fan of white chocolate!

      Reply
      • The Monday Box

        May 27, 2015 at 9:07 pm

        Thanks, Reeni! It's hard to believe I have been baking Monday Box stuff for three years, but even harder to realize that my son is finishing college. Blogging is an adventure and there is ALWAYS so much more to learn. You would love these bars. The chewy top half is full of white chocolate and vanilla !

        Reply
    5. Ashley

      May 26, 2015 at 3:41 pm

      Congrats on three years Wendy!! What a beautifully written post too! And huge congrats to your son!

      And of course these bars look delicious, as always!

      Reply
      • The Monday Box

        May 27, 2015 at 1:30 pm

        Thanks, Ashley, for your kind words! Time has a way of slipping by. Suddenly you look up from your keyboard or cookbook and find that three years have gone by and your "baby" is graduating college. 🙂 Savor each moment.

        Reply
    6. Tricia @ Saving room for dessert

      May 25, 2015 at 7:54 pm

      Oh Wendy this is such an amazing lovely post. Congratulations on your anniversary! You do a wonderful thing here and all your recipes look amazing. Congratulation also on your sons graduation. What a terrific accomplishment. I love your blog and your stories and hope you continue so I can still count you as one of my favorite virtual friends.

      Reply
      • The Monday Box

        May 27, 2015 at 1:35 pm

        Thanks so much, Tricia! Your kind words and enthusiastic support are ALWAYS appreciated. 🙂 The plan is to keep blogging until.....? I truly hope that some day we can meet in real life (at a blog conference or when you open your b&b 😉 ) and our virtual friendship can be real life too. 🙂

        Reply
    7. Monica

      May 25, 2015 at 6:22 am

      Wendy, this is a beautiful post. First of all, happy 3 years of blogging! You have achieved so much and touched many of us in these few years. I'm thankful to have gotten to know you a bit thanks to blogging, and I want to thank you for all the gracious words and encouragement you've shown me. You have inspired me with not only your delicious recipes and tips but with what you do with the military packages and spreading the word on how we can give back a little. I'm also thrilled about your son's graduation! I know your regular care packages have been a constant reminder of your support and love back home. I'm sure those thoughtful packages fueled him the last few years and will continue to be a sweet part of his life in all the adventures to come.
      It's no fair I'm looking at these black and white bars without a few in front of me! : ) I love those chocolate chunks in the bottom layer. They are striking to look at and pretty much irresistible! Have a lovely Memorial Day!

      Reply
      • The Monday Box

        May 27, 2015 at 1:55 pm

        Thank you for being my head cheerleader, Monica! We really do have a mutual admiration society going here. I have lost count of the cooking magazines and cookbooks that I have learned about from reading your blog, not to mention the many chocolate or Asian inspired dishes you oh so casually whip up to satisfy a craving, but are new and fascinating and delicious to me! You inspire me to be adventurous with new flavors and techniques.
        Becoming more aware of the selflessness and sacrifices of our military, was an unexpected extension of my care package niche. I am delighted that my posts can be help spread the message. 🙂
        As for Noah's graduation.....as trite as it sounds, time moves so quickly. We all need constant reminders to live in the moment and seize the day! Thank you, for your sweet words and kind wishes!

        Reply
        • Monica

          May 28, 2015 at 8:53 am

          To hear you say that *I* have inspired you to be adventurous with flavors and techniques boggles my mind! Thank you, Wendy. And thank you on the reminder about time and living in the moment. It is not trite at all but so true. Have a great one - enjoy everything!

          Reply
    5 from 2 votes (2 ratings without comment)

    Leave a Reply Cancel reply

    Your email address will not be published. Required fields are marked *

    Recipe Rating




    Primary Sidebar

    I'm Wendy, a baker, care package maker, and smile creator. On The Monday Box you’ll find care package inspiration and recipes for delicious treats that make it easy for you to share home baked love. Let’s spread happiness, one cookie at a time!

    More about me →

    Brunch favorites

    • Ball shaped cookies with white icing and pastel nonpareil sprinkles.
      Italian Easter Cookies (Taralli Dolci Di Pasqua)
    • Orange Creamsicle Bars
    • Lemon and Lime Butter Cookie Rosettes
      Lemon and Lime Butter Cookie Rosettes
    • Closeup of sliced Italian Lemon Pound Cake
      Italian Lemon Pound Cake
    • Pastel colored cookies with crackled tops.
      Flourless Soft Almond Cookies (Pasticcini di Mandorle)
    • Bob Evans Cherry Bread Recipe

    Super easy mug cakes

    • Microwave Peach Cobbler
    • 3-2-1 Molten Lava Cake
      Lava Cake in a Mug
    • Chocolate cake in a mug topped with cherries and almonds.
      Black Forest Mug Cake
    • Orange Mug Cake in a white mug topped with orange marmalade.
      Orange Mug Cake
    • Piña Colada Mug Cake
    • Closeup of pineapple slice and maraschino cherry on top of vanilla mug cake.
      Pineapple Upside Down Mug Cake

    Most Popular

    • Closeup of raisin biscuit squares with golden crust speckled with raisins.
      Golden Raisin Biscuit Cookies
    • Sliced loaf of honey cake on a white platter.
      Honey Applesauce Cake
    • Espresso Chocolate Shortbread Cookies- melt-in-your-mouth buttery shortbread made even better with added espresso and chocolate! | The Monday Box
      Espresso Chocolate Shortbread Cookies
    • Chocolate frosted mug cake a bowls of mix-ins
      Cake Mix Mug Cake

    Footer

    ^ back to top

    About

    Contact

    Privacy Policy

    Disclaimer

    As Seen On

    Copyright © 2012 - 2025 The Monday Box, All Rights Reserved.

    Rate This Recipe

    Your vote:




    A rating is required
    A name is required
    An email is required

    Recipe Ratings without Comment

    Something went wrong. Please try again.