Preheat oven to 350 degrees F. Liberally grease 24 muffin cups with cooking spray. In a small bowl, whisk together the melted butter and brown sugar until combined. Drop heaping Tablespoonfuls of this brown sugar mixture into the bottoms of the cups. Place three pineapple chunks in a star pattern into the brown sugar mixture.

In a large bowl, beat together the cake mix, eggs, oil and pineapple juice until combined, about 2 minutes. Portion the batter evenly among the muffin cups, filling about 3/4 full.

Bake for approx. 18-20 minutes or until a toothpick inserted near the center comes out clean. Cool in the pans for about 5-7 minutes, then very carefully invert onto a baking sheet, serving platter, tray, etc. You may need to run your knife along the edges of the cupcakes before releasing them.

Garnish with cherries and serve warm or room temperature.