This keto lemon blueberry mug cake is a super fluffy and delicious coconut flour mug cake. An easy low carb mug cake is made in the microwave with only a few ingredients.
In a microwave-safe mug, whisk the egg, sweetener, coconut flour, heavy cream, baking powder, lemon extract, and lemon zest. Use a fork to mix until the batter looks smooth.
Fold in the blueberries.
Microwave on high for about 90 seconds.
Remove from the microwave and let the cake cool slightly before eating.
You can enjoy your keto mug cake plain straight from the mug or top with whipped cream or lemon keto ice cream.