Perfect Pair Sheet Cake | Big Recipe

Ingredients

• ***For the cake:***
• 2 sticks unsalted butter
• 1 cup water
• 1/2 cup unsweetened natural cocoa powder, not Dutch-processed
• 2 cups all-purpose flour, spooned and leveled
• 1 teaspoon baking soda
• 1/4 teaspoon salt
• 2 large eggs, room temperature
• 1 cup granulated sugar
• 1/2 cup light brown sugar, packed
• 2 teaspoons pure vanilla extract
• 1/2 cup buttermilk, room temperature
• ***For the peanut butter frosting:***
• 1 stick unsalted butter, softened
• 1 1/2 cups creamy peanut butter, melted
• 3 cups confectioners' sugar, plus more, to taste
• 1/2 cup heavy cream, plus more, to taste
• 1 teaspoon pure vanilla extract
• salt, to taste
• ***Optional, for topping:***
• 1 cup peanut butter cups, chopped
• caramel syrup or ice cream topping, to taste
• creamy peanut butter, to taste, melted