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–+ servings
fudgy swirled brownie blondies on parchment paper

Fudgy Swirled Brownie Blondies

Print Recipe
The caramel flavor of blondies merges with chocolatey brownies to form these thick and fudgy Swirled Brownie Blondies.
Course Dessert, Snacks
Cuisine American
Diet Vegetarian
Keyword Brownie Blondie, Chocolate
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings 9 blondie brownies
Author Marley Goldin

Equipment

Ingredients

  • 1 cup unsalted butter 1 cup usually = 2 sticks
  • 1 cup brown sugar
  • ½ cup granulated sugar
  • 3 large eggs
  • 2 teaspoons vanilla extract
  • 1 ½ cup all-purpose flour
  • ¼ teaspoon salt
  • 1 tablespoon cornstarch
  • ½ cup unsweetened cocoa powder
  • ½ cup chocolate chips (dark or semi-sweet)

Instructions

  • Preheat your oven to 350°F and line or spray a 9 x 9-inch square pan.
  • In a large mixing bowl, cream together butter and both sugars with a hand mixer on high until the mixture is smooth.
    1 cup unsalted butter, 1 cup brown sugar, ½ cup granulated sugar
  • Add vanilla extract and eggs and mix again until combined.
    3 large eggs, 2 teaspoons vanilla extract
  • Next, add your flour and salt and mix again until well-combined and no clumps remain. Your batter should be pretty thick at this point.
    1 ½ cup all-purpose flour, ¼ teaspoon salt
  • Use a measuring cup to scoop out about 1 and 1/2 cups of your batter and place it in a separate mixing bowl, leaving you with two roughly equal bowls of batter.
  • Add the cocoa powder and chocolate chips to one bowl to make brownie batter and the cornstarch to the other bowl to make blondie batter. Use your hand mixer to combine the blondie batter first, then the brownie batter, so as to not get any chocolate in the blondie batter.
    ½ cup unsweetened cocoa powder, ½ cup chocolate chips (dark or semi-sweet), 1 tablespoon cornstarch
  • Add the blondie batter to the prepped pan first and use a spatula to smooth it out. Then, add the chocolate brownie batter on top sporadically, and use a spatula to smooth it out, swirling the two batters together.
  • Bake for 25-30 minutes until a toothpick comes out clean.

Notes

  • To quickly soften butter, microwave it in 15-second intervals until your finger leaves an imprint in the butter when you poke it.
  • Make sure there are no clumps of cornstarch or cocoa powder left behind—they will leave you with a bitter taste!
  • If you love brownies as much as I do, you'll love this collection of my greatest brownie recipes!