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There’s nothing quite like a sudden chocolate craving hitting late at night. One minute you’re scrolling, and the next, you just need something sweet—and fast. That’s where this chocolate mug cake comes to the rescue. In just a couple of minutes, you can have a warm, fluffy, single-serving cake ready straight from the microwave. No fuss, no mess, and absolutely satisfying. I first tried this recipe on a rainy evening when I wanted dessert without turning on the oven. Since then, it’s become my go-to for cozy nights, quick treats, or whenever that chocolate urge strikes. It’s simple, indulgent, and perfect for any moment you need a sweet pick-me-up.

Ingredients Needed

For a single-serving chocolate mug cake, you’ll need:

4 tablespoons all-purpose flour – forms the base of your cake
2 tablespoons cocoa powder – for rich chocolate flavor
2 tablespoons granulated sugar – adjust to taste for sweetness
3 tablespoons milk – any type works: dairy, almond, oat, or soy
2 tablespoons vegetable oil – keeps the cake moist
1/4 teaspoon vanilla extract – adds a subtle, warm aroma
Optional: 1 tablespoon chocolate chips – for extra melty goodness
Optional egg: 1 small egg – if you prefer a traditional texture (skip for no egg mug cake)

Tips:

Use a large microwave-safe mug to prevent overflow.
Ingredients can be swapped to make a dairy-free or healthier version.
Make sure to mix the dry ingredients thoroughly before adding wet ingredients for a smooth batter.

Find even more cake recipes when you visit my Pinterest.

How to Make a Chocolate Mug Cake

Mix the dry ingredients – In your mug, combine the flour, cocoa powder, and sugar. Stir well to remove any lumps.
Add the wet ingredients – Pour in the milk, vegetable oil, and vanilla extract. Mix until you get a smooth batter. If using an egg, add it here and stir until fully incorporated.
Fold in extras – Sprinkle in chocolate chips or any other add-ins you like. Gently fold them into the batter.
Microwave the cake – Place the mug in the microwave and cook on high for 60–90 seconds. Cooking time may vary depending on your microwave’s power. The cake should rise and feel set but still soft in the center.
Check and enjoy – Let the cake cool for 1–2 minutes. Use a spoon to dig in straight from the mug or top with whipped cream, ice cream, or fruit for an extra treat.

Pro Tips:

Avoid overcooking; the cake continues to cook slightly after microwaving.
For a fluffier texture, try whisking the batter briskly to incorporate a bit of air.
Customize with nuts, peanut butter, or caramel swirls for a fun twist.

More Mug Cake Recipes

Additional Add-In Ideas

Take your chocolate mug cake to the next level with these quick and delicious add-ins:

Chocolate chips or chunks – melt into gooey pockets of chocolate throughout the cake.
Nuts – chopped walnuts, pecans, or almonds add crunch and a nutty flavor.
Peanut butter or Nutella swirl – drop a spoonful in the center before microwaving for a creamy surprise.
Caramel or chocolate sauce drizzle – pour over the top after cooking for extra indulgence.
Berries – fresh or frozen raspberries, strawberries, or blueberries add a bright, tart contrast.
Sprinkles or mini marshmallows – fun for kids or a festive touch.

Tip: You can mix and match these add-ins. Keep them minimal to ensure the cake cooks evenly in the microwave.

For a Healthier Mug Cake

If you want to enjoy a chocolate mug cake without the extra calories, there are simple ways to make it lighter:

Swap sugar for natural sweeteners – Use honey, maple syrup, or coconut sugar instead of granulated sugar.
Use whole wheat flour or oat flour – Adds fiber and a subtle nutty flavor.
Replace oil with applesauce or Greek yogurt – Keeps the cake moist while reducing fat.
Use low-fat or plant-based milk – Almond, oat, or skim milk works perfectly.
Add fruit or seeds – Mashed banana, blueberries, or chia seeds can add natural sweetness and nutrients.

Tip: Even with healthier swaps, the cake remains rich and chocolatey. Experiment to find the balance between indulgence and nutrition that works for you.

Can I Make It Dairy Free?

Absolutely! You can enjoy a delicious chocolate mug cake without any dairy. Here’s how:

Milk substitutes – Use almond milk, oat milk, soy milk, or coconut milk in place of regular milk.
Butter substitutes – Replace vegetable or dairy butter with coconut oil or vegan butter for the same moist texture.
Chocolate options – Make sure to use dairy-free chocolate chips or a plant-based chocolate bar for melt-in-your-mug goodness.
Egg-free option – Simply skip the egg for a no egg mug cake, or use a tablespoon of applesauce or mashed banana to help bind the batter.

Tip: Dairy-free versions may be slightly lighter in texture but remain rich, chocolatey, and satisfying. Top with plant-based whipped cream or berries for extra indulgence.