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Brownie Cookie Cake

This single layer brownie cookie cake was inspired by the one of the best celebration cakes out there- the cookie cake. A layer of fudgey brown butter brownies topped with a decadent milk chocolate frosting
PRep Time20 minutes
Cook Time40 minutes
Servings 12 slices
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Equipment

  • 1 Whisk or handmixer
  • 1 9 inch Springform Pan
  • Parchment Paper

Ingredients

Brownie Layer

  • 1 cup butter 227g
  • 1 cup semi-sweet chocolate chips 6oz
  • 1 cup granulated sugar 200g
  • 1/2 cup dark brown sugar 100g
  • 3/4 cup Dutch-process cocoa powder 60g, spooned and leveled
  • 3 large eggs
  • 2 tsp vanilla extract
  • 1/2 cup all-purpose flour 63g
  • 1 tsp kosher salt

Milk Chocolate Frosting

  • 1 cup unsalted butter 226g, softened to room temperature
  • 3 1/2 cups confectioners sugar 420g
  • 1/2 cup dutch-process cocoa powder 41g
  • 2 oz milk chocolate chips (or bar) melted and cooled slightly
  • 1/4 teaspoon salt

Instructions

  • Preheat oven to 325F
  • Line a springform 9 inch pan with a single sheet of parchment and grease the sides of the pan, set aside
  • In a medium HEATPROOF bowl, add the chocolate chips and set aside
  • Brown the butter over medium heat. In a large saucepan, place the 1 cup (227g) of butter and turn heat to medium, butter will begin to melt then foam, stir intermittently until butter appears brown in color and smells toasty. Remove from heat and pour the hot butter directly over the chocolate chips in their heat proof bowl. This is important! Do not let the butter cool. Next, let the butter/chocolate mixture sit so that the heat from the butter melts the chocolate for about 2 minutes. Mix with a nonstick spatula until chips and butter are completely smooth
  • In a separate large bowl, add the sugars, cocoa powder, eggs, and vanilla. Using a hand mixer mix until lighter in color, fluffy and smooth. This should take about 2-3 minutes at least, if mixing by hand make sure to mix VIGORUSLY.
  • Add in melted chocolate and brown butter to the whipped sugars, cocoa powder, eggs, and vanilla in the larger bowl. Mix with a nonstick spatula until smooth. Add in flour and salt and mix again until thick batter forms
  • Pour batter into springform pan and bake for 35-45 minutes checking for a firm edge and a set center. Every oven is different so start checking for doneness at 35 minute in case your oven runs hot!
  • Remove from oven and let cool!

Make the Frosting

  • In the bowl of a stand-mixer fitted with a paddle attachment (or a large bowl + a handmixer) add butter and confectioner's sugar.
  • Mix until light and fluffy, on medium speed about 5 minutes then scrape down the sides of the bowl. Add cocoa powder and mix until completely combined.
  • Add in the COOLED melted chocolate and salt. Mix again until smooth. Make sure to keep the speed low at first to combine then to move it up to medium to help the frosting stay fluffy!
  • Using a piping bag with a closed star piping tip (or plastic bag)pipe stars around the border of the COOLED cake. Top with sprinkles and slice!