Sometimes, you want a brownie without making a whole tray. Maybe you just don’t want to wait 20 minutes for the brownies to come out of the oven. I get it. That’s why I made this recipe for a microwave brownie, using modified brownie mix!
Tbh, I don’t really know what this is, other than delicious.
It’s not totally solid like a brownie, but it’s not thin like batter or pudding. It’s got a whipped, fudgy texture, but it’s very distinctly still a brownie.
I’ll call it– brownie fudge. Yes, that is the best way to describe it.
Of course, you can always cook it a bit longer to have a more solid unit, but the timing is something to be reckoned with. A few seconds too long in the microwave and you might burn it!
But anyway, origin story for this microwave brownie.
I asked my Instagram followers on Monday: would you rather get a recipe for a brownie in a mug or a cake in a mug? I think you can guess which one won!
And btw, if you want to keep up with me or vote for the next recipe, be sure to follow me on Instagram! I’m definitely going to be doing more recipe polls on what you dears want to see, so your input can and will influence what you see here!
So I set to work. Since the recipe for the cake in a mug was so easy, I thought the brownie would be too. (I’ll publish the cake recipe at a later date. 😉 )
Erm… not so fast.
The twist to this microwave brownie was that it needed to use a brownie mix.
Yes, I could have probably made this easier on myself by just making it from scratch. But I didn’t want what was easier for myself. I wanted something that had you pulling out as little ingredients as possible. Even better, you can keep the brownie mix in a container and scoop out what you need as the need arises! It’s a lot cheaper than buying those single-serve packets, too.
One other caveat to this recipe is that it cooks better in a vessel that has a wider base than a standard mug. Think, a dessert bowl (as pictured) or a soup mug. Making this recipe in a smaller mug ended up burning up! The outside was overcooked, while the inside didn’t cook at all.

About the eggs in a microwave brownie.
Eggs are a bit tricky because the box calls for one egg for the entire mix. And since we’re dividing the box into 6 servings, this can get a bit tricky.
I thought about egg-free replacements, but most of them I either expensive or just loaded with starches. Not my definition of a good time.
But oh, the idea was right in my cupboard the whole time: chia seeds.
I have heard of and read about using chia from Megan at Detoxinista as an egg substitute. So I set to work and y’know what… it’s perfect!
You dears know how much I love chia seeds– I’ve used them in many recipes, like my recipe for chocolate overnight oats. And in this scenario, we’re able to get a “1/3” of an egg, by mixing one teaspoon of ground chia seed and 1 tablespoon of water.
I know kitchen measurements like the back of my hand! (Just please don’t make me explain it…)
And hey, Valentine’s day is coming (maybe, depending on when you’re reading this!). Double this recipe so you and your sweetie can have a decadent chocolate dessert! Or, if you’re single like me, feel free to double it anyway. It’s your day too, so put on as much chocolate as you please!

And if you are single this year, I suggest reading my survival guide to single’s Valentine’s Day. 😉
Did you make this recipe? Feel free to tag me @fooddrinkslife or use #fooddrinkslife… I always want to know what you dears are cooking up!
Cheers dears!
Gem
Microwave Brownie (A.K.A. Brownie Fudge)

This microwave brownie is desert on demand! It’s so easy and fudgy, and you don’t have to spend extra on microwave brownie packets!
Yields: 1-6 servings
- For the Brownie Mix:
- 1 18 oz. box brownie mix
- 2 Tbsp. ground chia seeds
- For every one serving, add:
- 3 oz. brownie mix
- 3/4 tsp canola oil (eyeball it)
- 2 1/2-3 Tbsp. water
Lightly grease one microwave-safe bowl for each serving. Place on scale and measure dry brownie mix.
Add liquid ingredients and mix well. If your mix is dry or too dough-like, add more water in small increments.
Microwave on half power for 2 minutes. Pay close attention and microwave in 30 second increments until batter is set to your liking. For more of a fudgy texture, microwave less. times will vary by microwave. I have a 1100 watt unit.
When brownie is cooked, allow to cool for a couple minutes. Eat plain or add a scoop of your preferred ice cream on top.
- Preparation time: 5 minutes
- Cook time: 5 minutes
- Total time: 10 minutes