Name: Chocolate Lava Mug Cake
Prep time: 3 min
Cook time: 1 min
Total time: 4 min
Cuisine: American
Ingredients: 1/4 cup all-purpose flour; 1/4 cup granulated sugar; 2 tbsp unsweetened cocoa powder; 1/8 tsp baking powder; Pinch of salt; 1/4 cup milk; 2 tbsp vegetable oil; 1/4 tsp vanilla extract; 1 tbsp chocolate chips or a square of chocolate (for lava center)

Jump to Recipe

Indulge in a rich, decadent treat with this Chocolate Lava Mug Cake—a single-serving dessert that combines the gooey center of a lava cake with the convenience of microwave cooking. Ready in minutes, it’s the perfect solution for a last-minute sweet craving.

Why You’ll Love This Recipe

This Chocolate Lava Mug Cake offers the ultimate comfort dessert with minimal effort. Made entirely in a mug using simple pantry staples, it delivers warm, molten chocolate in just minutes. It’s ideal for portion control, customizable, and doesn’t require an oven, making it perfect for dorms, offices, or late-night treats.

Ingredients

(Tip: You can find the complete list of ingredients and their measurements in the recipe card below.)

All-purpose flour
Unsweetened cocoa powder
Granulated sugar
Baking powder
Salt
Milk
Vegetable oil
Vanilla extract
Semi-sweet or dark chocolate (for the lava center)

Directions

In a microwave-safe mug, mix together the flour, cocoa powder, sugar, baking powder, and salt.
Add the milk, vegetable oil, and vanilla extract. Stir until the batter is smooth and free of lumps.
Press a piece of chocolate (or chocolate chips) into the center of the batter, ensuring it is fully covered.
Microwave the mug on high for 60 to 90 seconds, depending on the wattage of your microwave. The cake should rise and be set on the outside while still gooey in the center.
Allow to cool for 1–2 minutes before serving.

Servings and timing

This recipe serves 1. It takes approximately 5 minutes in total: 3 minutes for preparation and 1–2 minutes for cooking, depending on your microwave’s power.

Variations

Peanut Butter Lava Mug Cake: Add a spoonful of peanut butter to the center instead of chocolate.
Gluten-Free Option: Use a gluten-free all-purpose flour blend.
Mocha Version: Stir in ½ teaspoon of instant coffee granules with the dry ingredients.
Dairy-Free: Substitute milk with almond, oat, or soy milk.
Extra Rich: Use a tablespoon of chocolate hazelnut spread in place of chocolate for a creamier center.

storage/reheating

This mug cake is best enjoyed fresh. However, if you have leftovers, cover the mug and store it in the refrigerator for up to 1 day. Reheat in the microwave for 15–20 seconds until warm. Note: reheating may cook the center further, reducing the lava effect.

FAQs

What type of mug should I use for a mug cake?

Use a microwave-safe mug that holds at least 12 ounces to prevent overflow during cooking.

Can I use water instead of milk?

Yes, water can be used, but milk adds richness and a better texture to the cake.

Why is my mug cake rubbery?

Overcooking is the most common reason for a rubbery texture. Try microwaving in 10-second intervals after the first minute until just set.

How do I know when the mug cake is done?

The edges should look set while the center remains slightly gooey. Avoid overcooking if you want a molten center.

Can I make this recipe ahead of time?

It’s best made fresh, but you can mix the dry ingredients in advance and store them in a small container for quick assembly.

What can I use instead of vegetable oil?

Melted butter or coconut oil can be used as a substitute for vegetable oil.

Is it safe to microwave flour?

Yes, as long as the cake is cooked through. Avoid eating raw batter.

Can I double the recipe?

It’s better to make two separate mugs instead of doubling in one, as the batter may overflow or cook unevenly.

Can I use chocolate chips instead of a chocolate bar?

Yes, chocolate chips work well. Place a small handful in the center for the lava effect.

How can I make it more chocolatey?

Add a tablespoon of chocolate syrup to the batter or increase the amount of cocoa powder slightly.

Conclusion

This Chocolate Lava Mug Cake is a quick and satisfying dessert perfect for any chocolate lover. With minimal ingredients and effort, you can enjoy a warm, molten-centered treat straight from your microwave in under five minutes. Whether you’re short on time or just craving something sweet, this recipe delivers decadence in every bite