01 - Preheat oven to 350°F. Grease a 24-cup mini muffin tin or line with paper liners.
02 - In a medium bowl, whisk together flour, cocoa powder, baking powder, and salt until well combined.
03 - In a large bowl, mix melted butter, granulated sugar, and brown sugar until smooth. Beat in eggs one at a time, then stir in vanilla extract.
04 - Add dry ingredients to wet mixture and gently fold until just combined. Do not overmix.
05 - Stir in chocolate chips and chopped cherries until evenly distributed throughout the batter.
06 - Spoon batter evenly into prepared mini muffin cups, filling each about 3/4 full.
07 - Bake for 16-18 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs. Cool in pan for 10 minutes, then transfer to a wire rack to cool completely.
08 - Melt chocolate chips and butter together in a microwave-safe bowl in 20-second bursts, stirring until smooth. Drizzle or spread over cooled brownie bites. Allow topping to set before serving.