01 -
Heat the oven to 350 F. Grease a 12-cup muffin pan very well, coating the cups and top edges so the caramel topping releases cleanly.
02 -
Stir the melted butter and brown sugar together. Spoon about 1 tablespoon into each muffin cup, then add one cherry half and 2-3 pineapple chunks.
03 -
Beat the cake mix, eggs, pineapple juice, oil, vanilla, and salt in a large bowl until smooth, about 2 minutes. Scrape the bowl once so no dry mix remains.
04 -
Spoon batter over the fruit until each cup is about two-thirds full. Do not overfill, since the topping can bubble up as the cupcakes bake.
05 -
Bake for 20-22 minutes, until the tops spring back lightly and a toothpick inserted into the cake portion comes out clean.
06 -
Cool in the pan for 5-8 minutes. Run a thin knife around each cupcake, place a sheet pan over the muffin pan, and flip carefully. Let the cupcakes finish cooling before serving or adding liners.