Fruity Pebbles Cupcakes
Add cake mix, vanilla pudding, eggs, sour cream, oil, and water.
Mix until well combined.
Use a spatula to fold 1 cup Fruity Pebbles into cupcake batter.
Fill 20-22 cupcake liners about ¼ to ½ way full. Bake on 350°F for 15 to 20 minutes.
Add softened butter, powdered sugar, milk, and key lime juice to a large bowl.
Mix until combined and smooth. Add extra milk to reach the desired consistency.
Frost the cupcakes and sprinkle the remaining ½ cup of cereal on top of the cupcakes.
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