3 tablespoons unsweetened cocoa powder (I used dark)
1/4 teaspoon baking powder
1/4 teaspoon baking soda
1/4 teaspoon salt
3/4 cup granulated sugar
1 large egg
2 tablespoons water
5 Pop Tarts
6 tablespoons unsalted butter, softened
1 cup confectioners' sugar
3/4 teaspoon vanilla extract
2 tablespoons milk
Sprinkles & chocolate chips (optional)
Heat oven to 350 degrees F. Line an 8x8-inch square pan with foil; coat foil with nonstick cooking spray.
Melt butter in a small saucepan over medium heat; turn off heat and stir in chocolate until melted and smooth.
In a medium bowl, sift together flour, cocoa powder, baking powder, baking soda and salt. In a large mixing bowl, whisk together melted butter-chocolate mixture and sugar until well combined. Whisk in egg and water until well combined. Whisk in flour mixture until just combined.
Spread 1/3 of the batter evenly into pan. Top with 4 Pop Tarts. Cut the additional Pop Tart into pieces to fit into the remaining areas. Spread remaining batter on top. Bake 20-25 minutes or until set. Cool completely on a wire rack.
To make the frosting, beat butter until creamy, using a mixer on medium speed; sift in confectioners sugar. Add vanilla and milk. Mix until well combined and smooth. Spread frosting on top of brownies. Top with sprinkles and chocolate chips.