Keto Brownie Mug Cake! Easy low carb keto mug brownie recipe. BEST chocolate brownie microwave keto mug cake. A few simple keto friendly ingredients to make this gluten free, sugar free mug brownie. Fudgy Chocolate Keto Brownies! Simple & quick keto dessert recipes with this brownie. Yummy microwave brownie mug cake for ketogenic diet. #keto #lowcarb