A little surprise party awaits you inside each of these cupcakes, which are filled with candy and sprinkles.
1 (15.25 oz) box confetti cake mix
1 cup water
1/2 cup vegetable oil
3 large eggs
1/4 cup mini candy-coated chocolate candies
1/4 cup mini chocolate chips
1/2 cup rainbow sprinkles, divided
1 (16 oz) container white frosting
Preheat oven to 350°F. Line 18 cups of two 12-cup muffin pans with liners. Prepare the cake mix with the water, oil, and eggs according to package directions for cupcakes, filling each cup ¾ of the way.
In a small bowl, combine the mini chocolate candies, chips, and ¼ cup rainbow sprinkles.
When cupcakes are cool, with a paring knife, cut into centers of cupcakes at an angle to remove core, leaving ½-inch rims. Spoon 2 tsp candy mixture into each cupcake. Pipe or spread the frosting onto cupcakes. Sprinkle with remaining ¼ cup rainbow sprinkles.