This Keto Mug Brownie recipe is an incredibly decadent dessert. Make a single serving brownie whenever you are craving chocolate or something special. With only 7 ingredients you can have a fabulous dessert in under 5 minutes that is only 5 net carbs. These low carb brownies are sugar-free, grain-free, and gluten-free too.
If you are a person who is addicted to chocolate, you may be worried when you first start eating low carb. Don’t worry! There are plenty of fantastic recipes that you can enjoy that will easily fit into a low carb diet that is decadent and chocolatey. You don’t have to feel like you are giving everything up; you are simply choosing to eat healthier and say goodbye to refined sugars.
Sometimes I get in the mood for something rich and chocolatey, but I don’t want to go overboard and have too much. That is why a low carb keto mug brownie is ideal for me. It’s a fantastic sized portion, and I don’t even have to share it with anyone. Plus, it’s easy enough to make that if someone else wants one, they can have their own.
It took several tries to get the perfect brownie texture but this was worth it! It is my new go-to easy dessert.
Just seven ingredients and a minute or two are all you need to be well on your way to enjoying an amazing brownie in a mug!
Almond Flour - I prefer using just almond flour in this keto mug brownie recipe. Coconut flour will not give you that fudgy texture you want in a brownie.
Unsweetened Cocoa Powder - Regular grocery store cocoa powder is fine. For an Oreo flavor try using black cocoa powder.
Sweetener - I use my combination of xylitol, erythritol, and stevia in this recipe. You can find my sweetener recipe HERE.
Butter - In my house, I only buy salted butter. If you sub in unsalted butter make sure to add a tiny pinch of salt. An oil such as coconut oil or light olive oil can also work.
Egg Yolk - You only need a little bit of egg to make the brownie set properly. Adding a whole egg will make it too eggy. Just use the yolk and save the white for another use.
Vanilla Extract - Adding a bit of vanilla boosts the flavor of the keto mug brownie.
Sugar-Free Chocolate Chips - Semi sweet chocolate chips, dark chocolate chips, milk chocolate chips, or even white chocolate or peanut butter chips are delicious in this mug recipe.
How to Make a Keto Mug Brownie
It’s amazing how quickly and easily you can throw together a keto brownie mug cake. With just 7 ingredients, you can have yourself an incredible dessert to complete any meal.
First Step: Mix together the butter and sweetener in a microwave-safe mug. Microwave 30 seconds. Add the rest of the wet ingredients and the dry ingredients at the same time. Mix well.
Second Step: Once everything is combined well, put it in the microwave for 1 minute.
That’s all there is to it; now you can dig in and enjoy your keto brownie in a mug!
Variations and Ideas
There are several things you can do to these low carb mug brownies to make them a little different and tailored to everyone's cravings. We like to change our brownies based on whoever is eating them. Kids LOVE to make their own brownies, so we will let them. Here are a few ideas.
Nuts - Walnuts, pecans, almonds, or hazelnuts are all terrific nuts for these brownies. Just add ½ - 1 tablespoon of your favorite nut.
Cinnamon - Add a sprinkle of cinnamon or pumpkin spice for a fall flavor.
Peppermint Extract - Add a dash for a chocolate mint brownie!
Cayenne Pepper - If you haven’t had a brownie with a touch of cayenne pepper yet, you’ve been missing out. The cayenne makes the chocolate even more rich and indulgent. Just don’t add a lot of they will be overwhelming. A tiny sprinkle will do.
Whipped Cream - Top with a dollop of whipped cream.
Melted Chocolate Chips - Drizzle some melted sugar-free chocolate chips on top of the keto mug brownie right before eating. So good and gives you even more to satisfy your chocolate craving.
Oven-Baked Brownie - If you don't have a microwave and want to bake a single-serve brownie just bake it at 350 until it looks barely set about 20 minutes. Make sure to grease the ramekin or mug well.
Dairy-Free - To make this dairy-free just sub in coconut oil for the butter.
Sweetener - Try using a brown sugar sweetener for a warmer molasses like flavor.
Do I Have To Share My Brownie?
Well, it’s entirely up to you, but one of the advantages of these brownies in a mug is that they are already individual servings. You can easily share if you only want a taste or two, but you can easily eat the entire thing guilt-free. I'd suggest making a few chocolate brownie microwave mug cakes so everyone gets their own. Everyone who tries one says they are glad I made them their own!
Can I Make This Nut Free?
Yes! This keto mug brownie recipe works very well with sunflower seed flour instead of almond flour. That is my go-to sub when baking and in particular in brownie recipes when I need them to be nut-free.
Do I Have To Put Egg Into the Mug Brownie?
My recipe for this keto mug brownie only calls for the yolk. The egg yolk adds to the richness of the brownie, gives it a texture similar to regular brownies, and cooks up perfectly. However, if you want to skip the egg yolk if needed. An alternative is 1 tablespoon of sour cream, but keep in mind the texture will be slightly different. You are welcome to try out various egg substitutes until you find what works for you.
Keto Mug Brownie
- 2 tablespoon salted butter
- 1 tablespoon Joy Filled Eats Sweetener (or see alternatives in recipe notes)
- 1 tablespoon almond flour
- 1 tablespoon cocoa powder
- 1 tablespoon sugar-free chocolate chips
- 1 egg yolk
- ¼ teaspoon vanilla
- Microwave the butter and sweetener for 30 seconds.
- Add the other ingredients and mix well.
- Microwave 1 minute.
More Low Carb Mug Cake Options
Keto Vanilla Mug Cake - Great base for a strawberry shortcake.
Black Bottom Mug Cake - This one might be my favorite keto mug cake recipe!
Mini Snickerdoodle Layer Cake - Serves 4 in a mini cinnamon-flavored layer cake.
Keto Lemon Mug Cake - Coconut flour based lemon cake. Light & fluffy!
Originally Published June 1, 2020. Revised and Republished April 18, 2023.