5-Minute Chocolate Mug Cake — No Oven Needed
Craving chocolate cake at 11 PM? This single-serving chocolate mug cake satisfies your sweet tooth in exactly 5 minutes without turning on the oven. Rich, fudgy, and impossibly moist — it tastes like a bakery-quality lava cake made right in your favorite mug. The center stays gooey and molten while the edges set up perfectly. This is dangerous knowledge because now you can make cake anytime you want.
Method
- In a large microwave-safe mug (at least 12 oz), add flour, sugar, cocoa powder, baking powder, and salt. Stir with a fork until combined.
- Add milk, oil, and vanilla extract. Mix until completely smooth with no lumps — scrape the bottom of the mug to get all the dry ingredients.
- Fold in chocolate chips if using — press a few into the center for a gooey molten middle.
- Microwave on high for 70-90 seconds. The cake should rise above the rim and look slightly underdone on top — this is perfect. It will continue cooking for 30 seconds after you remove it.
- Let it sit for 1 minute before eating — it is EXTREMELY hot.
- Top with whipped cream, ice cream, or a dusting of powdered sugar. Eat directly from the mug!
Microwave times are for a 1,000 W microwave, the usual US size. In an 800 W microwave (common in the UK and Europe) add about a quarter more time; at 1,200 W check a little early.
Craving chocolate cake at 11 PM? This single-serving chocolate mug cake satisfies your sweet tooth in exactly 5 minutes without turning on the oven. Rich, fudgy, and impossibly moist — it tastes like a bakery-quality lava cake made right in your favorite mug. The center stays gooey and molten while the edges set up perfectly. This is dangerous knowledge because now you can make cake anytime you want.
Nutrition per serving
- Calories
- 380 kcal
- Protein
- 5 g
- Carbs
- 52 g
- Fat
- 16 g
- Fibre
- 2 g
- Sugar
- 28 g
- Sodium
- 180 mg
Values are estimates based on USDA FoodData Central and vary with brands and portioning.
Chef notes
The #1 rule of mug cakes: DO NOT OVERCOOK. If you microwave it until it looks fully done, it will be a rubbery hockey puck by the time it cools. Pull it out when the top still looks slightly wet — residual heat finishes the job. Your microwave wattage matters: 1000W = 70 seconds, 800W = 80 seconds, 700W = 90 seconds.
Substitutions
- Use almond flour and coconut sugar for a gluten-free version. — Replace milk with oat milk and oil with coconut oil for vegan.|Use peanut butter instead of oil for a chocolate PB mug cake.|Add espresso powder for a mocha version.
Serving suggestions
Top with vanilla ice cream — the hot and cold contrast is incredible.|Drizzle with caramel sauce and sea salt for a salted caramel chocolate cake.|Add fresh strawberries on top for a chocolate-covered strawberry vibe.|Dust with powdered sugar and cocoa powder for a bakery presentation.
Storage
Mug cakes are best eaten immediately. They are a single-serving dessert designed to be made and consumed right away. If needed, cover with plastic wrap and eat within 2 hours.
Reheating
Not recommended to reheat. Mug cakes take only 5 minutes to make fresh — make a new one rather than reheating a stale one.
Equipment
- Large microwave-safe mug (12+ oz — smaller mugs will overflow)
- Fork for mixing
- Microwave
- Measuring spoons
Variations
- Red velvet mug cake — add 1 teaspoon red food coloring and replace half the cocoa with vanilla.
- Nutella mug cake — add a big spoonful of Nutella in the center before microwaving.
- Smores mug cake — add marshmallows and graham cracker crumbs on top.
- Churro mug cake — use cinnamon instead of cocoa and coat the mug with cinnamon-sugar.
Why it works
Microwave cooking works by exciting water molecules in the batter, causing them to vibrate and generate heat from within. The small volume of a mug cake means it heats through extremely quickly. The reason the center stays gooey is because microwave energy is strongest at the edges — the center receives less direct energy and stays molten. This is the same principle behind a French chocolate lava cake, achieved in a fraction of the time.
Frequently asked questions
Will my mug overflow?
Use a mug that holds at least 12 oz (a standard coffee mug). The batter rises during cooking but settles back down. Smaller mugs will make a mess in your microwave.
Can I make this without a microwave?
Yes! Bake in a ramekin at 375°F (190°C, gas 5) for 12-15 minutes. It will not be as fast but still works.
Is this recipe just for one person?
Yes, it is a perfect single serving. Double the recipe and use 2 mugs if making for two people.
Why is my mug cake rubbery?
You overcooked it. Reduce the microwave time by 10-15 seconds next time. Every microwave is different.
Can kids make this?
With adult supervision for the hot mug, yes! This is a great first baking recipe for kids because it is so simple and rewarding.
Tags
About the cook
5-Minute Recipes
Professional chef with 12+ years of experience specializing in quick and healthy weeknight meals.
More like this
Desserts
10min
No-Bake Halloween Dirt Cups (10 Minutes)
Desserts
5min
5-Minute Molten Chocolate Mug Cake
Desserts
5min
5-Minute No-Bake Chocolate Mousse Recipe
Desserts
20min
Creamy No-Bake Lotus Biscoff Cheesecake
Desserts
5min
No-Bake Peanut Butter Oat Bars
Desserts
5min
5-Minute Nutella Banana Crepes
More recipes with whipped
Other recipes in about 5 minutes
Reader reviews
No reviews yet. If you have made this recipe, you will be the first to say how it went.
Did you make this?
Tell us how it actually went — including if something did not work. Reviews are read before they are published.