15-Minute Vanilla Cupcakes with Rainbow Frosting
Microwave vanilla cupcakes baked individually in mugs, topped with fluffy vanilla buttercream and colorful sprinkles. Ready to eat in under 15 minutes—no oven required.
- Total time
- 15 min
- Servings
- 6
- Calories
- 285
- Protein
- 2g

Ingredients
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Open the appInstructions
Step 1
Mix flour, granulated sugar, and baking powder in a bowl.
Step 2
Whisk melted butter, egg, and vanilla extract in another bowl until smooth.
Step 3
Fold wet ingredients into dry ingredients until just combined; do not overmix.
Step 4
Divide batter evenly among 6 microwave-safe mugs, filling each halfway.
Step 5
Microwave mugs in two batches (3 at a time) for 90 seconds each until a toothpick inserted comes out clean.
Step 6
Beat softened butter and powdered sugar until fluffy, about 2 minutes.
Step 7
Spoon frosting onto cooled cupcakes and top with colorful sprinkles.
Tools you’ll need
- 2 mixing bowls
- whisk
- electric mixer or fork
- 6 microwave-safe mugs (8–10 oz each)
- spoon
- toothpick
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