01 - Preheat oven to 350°F. Line an 8-inch square baking pan with parchment paper.
02 - In a microwave-safe bowl, melt unsalted butter. Stir in granulated sugar, eggs, and vanilla extract until homogenous.
03 - Sift in cocoa powder, all-purpose flour, salt, and baking powder. Fold gently until just combined.
04 - Spread batter evenly in prepared pan. Bake for 20 to 25 minutes, or until a toothpick inserted in the center emerges with moist crumbs.
05 - Allow brownies to cool completely in the pan. Remove and cut into 16 uniform squares.
06 - Carefully insert a lollipop stick into each brownie square. If brownies are soft, chill for 20 minutes to firm before dipping.
07 - Melt candy melts in assorted colors according to package instructions, transferring to small bowls if desired.
08 - Dip each brownie pop into melted candy coating, turning to cover completely. Gently tap to remove excess.
09 - Before the coating sets, decorate with candy eyes, sprinkles, and assorted toppings to form monster faces.
10 - Arrange decorated pops on parchment paper. Allow candy coating to set fully before serving.