Boo Brownies


Fudgy chocolate brownies with fluff marshmallow buttercream ghosts decorating the top.

Makes about 12 brownies


Things you'll need

  • 1 cup vegetable oil
  • 1 cup all-purpose flour
  • 2 cups + 4 tablespoons sugar
  • 1/2 teaspoon salt
  • 1/2 teaspoon baking powder
  • 2 teaspoons vanilla extract
  • 2/3 cup unsweetened cocoa powder
  • 2 large eggs
  • 2/3 cup whole milk
Marshmallow Buttercream
  • 1 cup American buttercream
  • 2 cups marshmallow creme, Jet Puffed


  • Black American buttercream
  • 9 x 13 baking pan
  • Parchment paper
  • Whisk
  • Spatula
  • Piping bags
  • Round 2A piping tip

Let's get started!

  1. Preheat the oven to 375F. Grease and line the baking pan with parchment paper.
  2. In a large bowl, whisk together the sugar, flour, cocoa powder, salt and baking powder.
  3. Add the oil, milk, vanilla extract and eggs into the flour mixture and whisk until combined. 
  4. Pour the batter into the prepared pan and bake for 25 - 30 minutes.
  5. Let cool completely.

Time to Decorate!

  1. In a medium bowl, mix together the American buttercream and marshmallow creme until combined. Scoop into a piping bag fitted with a 2A piping tip.
  2. Scoop the black American buttercream into a piping bag and cut a small hole at the tip.
  3. Using the Marshmallow buttercream, pipe ghosts all over the top of the brownies.
  4. Using the black buttercream, pipe the eyes and mounts of the ghosts onto the marshmallow creme.



Written By Rosanna Pansino

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