Chocolate Mug Cake with Cake Mix: Ready in 3 Minutes
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Microwave Chocolate Cake for One
When a chocolate craving hits, you don’t always want to bake an entire cake. You definitely don’t want the leftovers staring at you later. This chocolate mug cake gives you the perfect single‑serve dessert in just a few minutes. No oven, no fuss. Just rich, warm, chocolaty goodness made right in a coffee mug.
This recipe makes a generous portion, so you’ll want a 2–3 cup microwave‑safe mug to give the batter room to rise. The texture is soft, fluffy, and moist. Everything you want in a chocolate cake, but without the wait.
Why You’ll Love This Mug Cake
- Uses simple pantry ingredients
- Ready in 2–3 minutes
- Perfect single serve dessert
- No oven required
- Soft, fluffy & rich
Ingredients
For the Cake
- ¾ cup dry chocolate cake mix
- 3 Tablespoons water
- 1 egg
For the Chocolate Frosting
- 3 Tablespoons cocoa powder
- 1 cup powdered sugar
- 2 Tablespoons room‑temperature butter
- ¼ teaspoon vanilla
- 2 Tablespoons milk
How to Make the Chocolate Mug Cake
- Mix the Batter: In a small bowl, whisk together the dry cake mix, water, and egg until smooth.
- Prep the Mug: Spray a 2–3 cup microwave‑safe mug with nonstick spray. Pour the batter into the mug.
- Microwave: Set the microwave to 70% power and cook for 2–3 minutes. Check at the 2‑minute mark . A toothpick should come out clean.
If not done, microwave in 15–20 second increments until set.
Tip: Overcooking will make the cake tough. Stop as soon as the center is set. - Cool: Let the cake cool slightly while you make the frosting.
Chocolate Frosting (Small Batch)
- Combine Dry Ingredients: In a bowl, mix the cocoa powder and powdered sugar.
- Add Wet Ingredients: Add butter, milk and vanilla. Mix until smooth and creamy.
If the frosting looks shiny or thin, add a little more powdered sugar until it thickens. - Frost the Cake: Spread over your cooled mug cake and enjoy warm.
Troubleshooting
- Cake is rubbery: microwaved too long
- Cake overflowed: mug was too small (use 2–3 cups)
- Cake is dry: microwave wattage too high
- Cake is gummy: under mixed batter
Variations
- Double Chocolate: Add chocolate chips to the batter
- Peanut Butter Swirl: Add 1 tablespoon peanut butter before microwaving
- No‑Egg Version: Replace egg with 2 tablespoons milk + 1 tablespoon oil
- Mocha Mug Cake: Add ½ teaspoon instant coffee
- If you love chocolate, try our triple chocolate sheet cake
Cake Mix Chocolate Mug Cake
A soft, fluffy chocolate mug cake made with boxed cake mix and cooked in the microwave. This single serve dessert is ready in minutes and perfect for quick chocolate cravings. Just mix, microwave and enjoy. No oven needed.
Equipment
- spoon
Ingredients
For the Cake
- ¾ cup dry chocolate cake mix
- 3 Tablespoons water
- 1 egg
For the Chocolate Frosting
- For the Chocolate Frosting
- 3 Tablespoons cocoa powder
- 1 cup powdered sugar
- 2 Tablespoons room‑temperature butter
- ¼ teaspoon vanilla
- 2 Tablespoons milk
Instructions
Chocolate Cake
- In a bowl mix all the ingredients.
- Take a 2-3 cup coffee cup and spray with non-stick spray.
- Pour the batter into the cup and place into the microwave.
- Put the power at 70% and microwave for 2-3 minutes.
- Check the cake after 2 minutes to see if it is done with a toothpick (toothpick will come out clean).
- If not, microwave for another minute.
- Overcooking will make the cake tough.
- While the cake is cooling, make the frosting.
Chocolate Frosting (Small Batch)
- In a bowl, mix the cocoa powder and powder sugar together.
- Add the butter, milk and vanilla.
- Mix until smooth.
- IF the frosting looks shiny (and not like frosting), add a little more powder sugar until no longer shiny and looks like frosting.
- Spread the frosting over your cooled cake and enjoy.
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