Single Serve Brownie Recipe (5-Min Microwave) – Easy & Fudgy
Some nights call for exactly one fudgy brownie, not a whole pan — this single-serve recipe is built for those nights. Everything mixes directly in a mug with a fork, then microwaves in under two minutes into a dense, chocolatey brownie with crackly edges. It’s the fastest way to satisfy a chocolate craving for one.
Ingredients
- 2 tbsp all-purpose flour
- 2 tbsp granulated sugar
- 1 tbsp unsweetened cocoa powder
- Pinch of salt
- 2 tbsp milk
- 1 tbsp neutral oil or melted butter
- 1/4 tsp vanilla extract
- 1 tbsp mini chocolate chips, plus more for topping
Instructions
- In a microwave-safe mug, whisk together the flour, sugar, cocoa powder, and salt until no lumps remain.
- Add the milk, oil, and vanilla extract, and stir until the batter is smooth.
- Fold in the chocolate chips.
- Microwave on high for 60 to 75 seconds, checking at 60 seconds — the brownie is done when the top looks just set and slightly wet in the very center.
- Let it sit for 1 minute before eating; it continues to firm up as it cools slightly.
- Top with a few extra chocolate chips or a small scoop of ice cream, if desired.
Why This Single Serve Brownie Works
Using a small amount of batter in a narrow mug means the microwave cooks it through quickly and evenly before the edges have a chance to turn rubbery. Stopping the microwave while the center still looks slightly underdone is what keeps this single serve brownie recipe fudgy instead of cakey, since the residual heat finishes the cooking as it rests.
Tips for the Best Single Serve Brownie
Whisk the dry ingredients well before adding any liquid — this single serve brownie recipe has so little batter that a lump of cocoa powder or flour is much more noticeable than in a full-size pan. Use a mug that’s wide rather than tall so the batter cooks in a thinner layer and heats through more evenly. Every microwave runs a little differently, so start checking at 60 seconds the first time you make it and adjust from there.
Common Mistakes to Avoid
Microwaving too long is the most common mistake — a brownie in a mug goes from perfectly fudgy to dry and rubbery within just 15 to 20 extra seconds. Skipping the rest time and digging in immediately means the center hasn’t finished setting up. Using a large chunk of chocolate instead of mini chips can leave pockets of unmelted chocolate since the short cook time doesn’t fully melt bigger pieces.
What to Serve With a Single Serve Brownie
A small scoop of chocolate ice cream on top turns this into a warm brownie sundae in under 5 minutes. A glass of cold milk is the classic pairing if you’d rather keep it simple.
Storage
This single serve brownie recipe is meant to be eaten right away — it doesn’t store or reheat well once fully cooled, since the texture firms up and loses its fresh-from-the-microwave fudginess. If you want to prep ahead, mix the dry ingredients only and store them in a small jar, then add the wet ingredients fresh when you’re ready to microwave.
Frequently Asked Questions
Can I bake this single serve brownie recipe in the oven instead? Yes — pour the batter into a small ramekin and bake at 350°F (175°C) for 12 to 15 minutes, until the top looks set.
Why did my single serve brownie recipe turn out rubbery? Rubbery texture almost always means it was microwaved too long — reduce the time by 10 to 15 seconds next time and check earlier.
Can I make this single serve brownie recipe without a microwave? Yes — bake it in a small oven-safe ramekin at 350°F (175°C) for about 12 to 15 minutes instead.
Can I double this recipe for two people? Yes — double all the ingredients and split the batter between two mugs, keeping the microwave time roughly the same since each mug still holds a thin layer.
