10-Minute Microwave Brownies (No Oven Required)
These microwave brownies are rich, fudgy, and ready in about 10 minutes. No oven, no waiting, just a quick chocolate fix when a craving hits.
Made in one bowl with basic pantry ingredients, the texture is dense and chewy, not cakey. They’re the dessert you make on a random Tuesday when you want something sweet without the fuss.
What Makes These Microwave Brownies So Good
I love a brownie that tastes like it baked for half an hour but actually came together while I was washing the mixing bowl. The melted butter and whole eggs give them a shiny, crackly top and a soft center that stays moist for days.
There’s no hot oven to heat up the kitchen, no worrying about burning the edges, and cleanup is basically a single bowl. It’s the recipe I reach for when I want a real dessert without turning on a single burner.
Ingredients
- 1/2 cup (115g) unsalted butter, melted: Use salted butter and skip the added salt if that’s what you have.
- 1/2 cup (100g) granulated sugar: White sugar gives the top that paper-thin crackle.
- 1/4 cup (50g) packed light brown sugar: Adds depth and keeps the center fudgy.
- 2 large eggs, at room temperature: Cold eggs can seize the melted butter, so pull them out early.
- 1 tsp vanilla extract: The warmth rounds out the chocolate.
- 1/2 cup (50g) unsweetened cocoa powder: Natural cocoa works best here, not Dutch process.
- 1/2 cup (65g) all-purpose flour: Spoon it into the cup and level it off so the brownie isn’t dry.
- 1/4 tsp fine sea salt: Wakes up the chocolate.
- 1/3 cup (60g) chocolate chips: Semisweet or dark chips melt into little pockets of gooey chocolate.
Variations / Substitutions
- Swap the chips: White chips, peanut butter chips, or chopped nuts all work in the same quantity.
- Add espresso powder: Stir in 1/2 tsp instant espresso with the dry ingredients for a darker chocolate flavor.
- Dairy-free: Replace the butter with melted refined coconut oil and use dairy-free chocolate chips. The brownie will be slightly softer.
- Extra fudgy: Reduce the flour to 1/3 cup and expect a spoonably soft center that sets as it cools.
For a stovetop brownie that doesn’t need a microwave, try the Classic Skillet Brownie Recipe.
How to Make Microwave Brownies
Step 1: Mix the Dry Ingredients
In a medium bowl, combine the 1/2 cup flour, 1/2 cup cocoa powder, 1/4 tsp salt, and the 1/3 cup chocolate chips. Whisk them together for about 30 seconds to break up any cocoa lumps.
The mixture will look like dark dust at this point. You’re just getting everything evenly distributed so the brownie bakes uniformly later.
Step 2: Add the Wet Ingredients
Melt the 1/2 cup butter in a microwave-safe bowl. Whisk in the 1/2 cup granulated sugar and 1/4 cup brown sugar for about 45 seconds. The mixture will look a bit grainy and glossy, and that’s exactly right.
Add the 2 eggs and 1 tsp vanilla, then whisk hard for another 30 seconds until the batter is thick and shiny. Fold the dry ingredients into the wet mixture with a spatula just until no streaks of flour remain. Overmixing here can make the brownie tough, so stop as soon as it comes together.
Step 3: Microwave the Brownie Batter
Scrape the batter into a greased 6-inch microwave-safe dish. A round or square dish works, as long as it fits in your microwave and has no metal. Smooth the top and microwave on high for 1 minute 30 seconds.
Check the center: it should look set but still fudgy underneath the surface. If it’s wet on top, keep microwaving in 15-second bursts, checking each time. The brownie will rise slightly and pull away from the edges just a bit. That’s your sign it’s done.
Step 4: Cool and Slice
Let the brownie cool in the dish on a wire rack for at least 5 minutes before slicing. It will continue to set as it cools, and cutting it too soon leaves a messy, crumbly first slice.
Run a knife around the edge, lift the whole slab onto a board, and cut into squares. Serve them warm, maybe with a dusting of powdered sugar or a scoop of vanilla ice cream.
Tips for a Better Microwave Brownie
- Use room temperature eggs. Cold eggs can make the melted butter solidify into little flecks, so the batter won’t be as smooth.
- Know your microwave’s wattage. A 700W microwave needs more time than a 110W one, and guessing leads to rubbery or raw brownies.
- Stir in the chocolate chips right at the start with the dry ingredients. They stay suspended in the batter instead of sinking to the bottom.
- Don’t walk away. Microwave cooking goes fast, and an extra 20 seconds can take it from fudgy to tough.
Check your microwave’s wattage and adjust the cook time using the table below.
| Microwave Wattage | Cook Time (start with 1st time, add 15-sec bursts after) |
|---|---|
| 700W | 2 min 30 sec to 3 min total |
| 900W | 1 min 45 sec to 2 min 30 sec total |
| 110W | 1 min 30 sec to 2 min total |
Storing Leftovers
- Refrigerate: Keep the brownies in an airtight container in the fridge for up to 4 days. The cool temperature firms them up even more.
- Reheating: Warm individual squares for 10 to 15 seconds in the microwave to bring back that just-baked softness.
Frequently Asked Questions
Can I double this recipe?
Yes, use an 8-inch microwave-safe dish and microwave on high for about 3 to 4 minutes, checking every 30 seconds after the 3-minute mark.
Why did my brownie turn out rubbery?
Overmixing the batter or a few seconds too many in the microwave can make it tough and rubbery. Stir just until the dry ingredients disappear, and stop cooking as soon as the center looks set.
Can I make this dairy-free?
Yes, swap the butter for an equal amount of melted refined coconut oil and use dairy-free chocolate chips. The brownie will be a bit softer in the center but still delicious.
My microwave doesn’t have a turntable. Will it still work?
Yes, just rotate the dish by hand halfway through the cooking time so the heat distributes evenly. Without rotation, one side may cook faster than the other.
Microwave Brownies Recipe
Ingredients
Method
- Whisk together the flour, cocoa powder, salt, and chocolate chips in a medium bowl until combined.
- Melt the butter, then whisk in both sugars until glossy. Add the eggs and vanilla and whisk until thick and shiny. Fold the dry ingredients into the wet mixture just until no streaks of flour remain.
- Scrape the batter into a greased 6-inch microwave-safe dish, smooth the top, and microwave on high for 1 minute 30 seconds. Check for doneness, then continue in 15-second bursts until the center is just set and the edges pull away slightly.
- Cool in the dish for at least 5 minutes, then slice into squares and serve.
Notes
