01 - Preheat oven to 350°F. Line a mini muffin tin with paper liners or grease thoroughly with cooking spray.
02 - Whisk melted butter and sugar in a mixing bowl until glossy and well-combined. Add eggs and vanilla extract, whisking until smooth and creamy.
03 - Sift flour, cocoa powder, and salt into the wet mixture. Fold gently with a spatula until just combined—do not overmix.
04 - Fold chocolate chips and chopped cherries into the batter until evenly distributed.
05 - Spoon batter into prepared mini muffin cups, filling each about three-quarters full.
06 - Bake for 16-18 minutes until tops are set and a toothpick inserted in the center comes out with moist crumbs.
07 - Let brownie bites cool in the tin for 5 minutes, then transfer to a wire rack to cool completely.
08 - Place chopped chocolate in a heatproof bowl. Heat cream in a small saucepan until just simmering, then pour over chocolate. Let sit 1 minute, add butter if using, and stir until smooth and glossy.
09 - Spoon or pipe ganache over each cooled brownie bite. Let set at room temperature for 20 minutes or refrigerate for 10 minutes before serving.