Ultimate Fudgy Mug Brownie Recipe
Introduction
This ultimate fudgy mug brownie is the perfect quick treat for chocolate lovers craving something rich and gooey. Ready in just minutes, it’s a single-serving dessert that comes together with simple pantry ingredients and a microwave.

Ingredients
- 2 1/2 tablespoons Dutch process cocoa powder
- 1 1/2 tablespoons all-purpose flour
- 2 tablespoons granulated white sugar
- 2 tablespoons canola, vegetable, or olive oil
- 2 tablespoons water
- 1 1/2 tablespoons chopped dark chocolate
Instructions
- Step 1: In an 8 oz microwave-safe mug, add the cocoa powder, flour, and sugar. Whisk together with a mini whisk or fork until well combined.
- Step 2: Add the oil and water to the dry ingredients. Whisk briskly until the batter is smooth, making sure to break up any lumps of cocoa or flour.
- Step 3: Stir half of the chopped dark chocolate into the batter. Sprinkle the remaining chocolate on top.
- Step 4: Microwave the mug brownie on full power for about 40 seconds. Cooking times may vary depending on the wattage of your microwave. The top of the brownie should no longer be wet but may still be slightly moist.
- Step 5: Allow the brownie to cool for a few minutes before eating. Enjoy it warm directly from the mug with a spoon.
Tips & Variations
- Use a microwave-safe mug that holds at least 8 ounces to prevent overflow during cooking.
- Swap dark chocolate for milk or white chocolate chunks for a different flavor profile.
- Add a pinch of salt or a dash of vanilla extract to enhance the chocolate taste.
- If you prefer a cakier texture, increase the flour by 1 tablespoon.
Storage
This mug brownie is best enjoyed fresh, but you can cover and refrigerate leftovers in the mug for up to 1 day. To reheat, microwave for 15-20 seconds until warm. The texture may be less fudgy after refrigeration.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use a different type of oil?
Yes, you can substitute canola, vegetable, or olive oil with melted butter for a richer flavor, but keep the quantity the same.
What if my microwave is more powerful or weaker?
Microwave wattages vary, so start with 30 seconds and check the brownie’s doneness. Add cooking time in 5-10 second increments to avoid overcooking.
PrintUltimate Fudgy Mug Brownie Recipe
This Ultimate Fudgy Mug Brownie is a quick and easy single-serving dessert that satisfies your chocolate cravings in under a minute. Made with Dutch process cocoa powder, rich dark chocolate, and simple pantry staples, it delivers a perfectly fudgy and moist brownie straight from the microwave.
- Prep Time: 3 minutes
- Cook Time: 40 seconds
- Total Time: 4 minutes
- Yield: 1 serving 1x
- Category: Dessert
- Method: Microwave
- Cuisine: American
Ingredients
Dry Ingredients
- 2 1/2 tablespoons Dutch process cocoa powder
- 1 1/2 tablespoons all-purpose flour
- 2 tablespoons granulated white sugar
Wet Ingredients
- 2 tablespoons canola, vegetable, or olive oil
- 2 tablespoons water
Chocolate
- 1 1/2 tablespoons chopped dark chocolate
Instructions
- Combine dry ingredients: In an 8 oz microwave-safe mug, add the cocoa powder, flour, and sugar. Whisk together thoroughly with a mini whisk or fork until well mixed and there are no lumps.
- Add wet ingredients: Pour the oil and water into the mug with the dry ingredients. Whisk briskly to form a smooth batter, ensuring any lumps of cocoa or flour are fully broken up.
- Mix in chocolate: Stir half of the chopped dark chocolate into the batter to distribute rich chocolate pieces throughout. Then sprinkle the remaining chopped chocolate evenly on top of the batter.
- Microwave cooking: Microwave the mug brownie on full power for about 40 seconds. Cooking times may vary based on your microwave wattage. The surface should no longer be wet but might still be slightly moist, indicating a fudgy texture.
- Cool and serve: Let the brownie cool for a few minutes directly in the mug. Enjoy it warm with a spoon straight from the mug for the ultimate quick chocolate treat.
Notes
- Microwave times may vary; start with 40 seconds and add additional time in 5-second increments if needed.
- Use a mug that holds at least 8 ounces to prevent batter overflow.
- For a richer brownie, use dark or bittersweet chocolate.
- The brownie will be fudgiest when slightly undercooked and moist on top.
- Optional: Add a pinch of salt to enhance the chocolate flavor.
Keywords: mug brownie, fudgy brownie, quick dessert, microwave brownie, single serve dessert, chocolate mug cake

