Holding a frosted brownie on a cloth napkin.

Sheet Pan Frosted Brownies

  • Author: Rebecca Blackwell
  • Prep Time: 30 minutes
  • Cook Time: 24 minutes
  • Total Time: 54 minutes
  • Yield: 32 large or 64 small brownies


Everyone loves brownies and these are the crowd pleasing variety. Plus, they’re super easy. In about an hour you’ll have 64 small frosted brownies.



  • 4 cups packed dark brown sugar
  • 1 1/3 cup (21 1/3 tbsp) salted butter, at room temperature
  • 2 tbsp pure vanilla extract
  • 12 large eggs, at room temperature
  • 1 tsp salt
  • 1 1/3 cup + 3/4 cup unbleached all-purpose flour
  • 1 cup cocoa powder
  • 2 1/2 cups semi-sweet or bitter-sweet chocolate chips


  • 1 cup semi-sweet or bitter-sweet chocolate chips
  • 3/4 cup powdered (confectioners) sugar
  • 1/3 cup milk
  • 1 stick (8 tbsp) salted butter
  • 3/4 tsp salt
  • 2 tsp pure vanilla extract



  1. Butter a large sheet pan and heat the oven to 350 degrees.
  2. In the bowl of a standing mixer fitted with the paddle attachment, beat the brown sugar with the butter on medium-high speed until combined, about 1 minute. Beat in the vanilla until fully incorporated.
  3. With the mixer running on medium-low speed, add the eggs one at a time, beating for 10-20 seconds after each addition, making sure to fully incorporate one before adding the next. Stop the mixer to scrape down the sides of the bowl a few times during this process. Add the vanilla when you add the last egg, beating just long enough to combine.
  4. In a separate bowl, add the salt, flour, and cocoa powder and stir with a wire whisk to combine. Add to the standing mixer bowl and beat on the lowest speed just to incorporate. Using a spatula, give the batter a stir to make sure all the flour has been mixed into the batter.
  5. Pour the batter into the buttered sheet pan and smooth it into an even layer. Sprinkle the chocolate chips evenly over the batter. Bake for 21 – 24 minutes, until the brownies are just barely set in the center of the pan.
  6. Set the pan on a wire rack and let cool completely before frosting.


  1. Put the chocolate chips in a medium size bowl and set aside.
  2. Add the powdered sugar, milk, butter, and salt to a medium size sauce pan set over medium-high heat. Cook, stirring frequently, until the butter melts and the mixture comes to a boil. Let boil, stirring constantly, for 30 seconds.
  3. Pour the butter and sugar mixture over the chocolate chips and let sit for 5 minutes. Stir until all the chocolate chips are melted and the frosting is smooth, then stir in the vanilla.
  4. Pour the frosting over the cooled brownies, spreading it into a thin even layer. Let the frosting set for at least 30 minutes before cutting and serving.

Keywords: brownies, frosted brownies, party, BBQ, dessert, recipe, chocolate