Keto Lemon Mug Cake

Closeup of a lemon cake slice with a creamy glaze.

4.96 from 85 votes

Big flavour, light texture and ready in 3 minutes: Try this easy keto lemon mug cake with a deliciously zingy lemon glaze.

Prep Time2

Cook Time1

Total Time3

Course: Dessert

Cuisine: British

Servings:

Calories: 243kcal

Author: Katrin Nürnberger

Ingredients

For the cake

4 tablespoon almond flour extra fine, or 5-6 tablespoons ground almonds
2 tablespoon heavy cream
1 ½ tablespoon powdered sweetener
1 egg
2 tablespoon lemon juice
½ teaspoon baking powder

For the glaze

1 tablespoon unsalted butter
1 tablespoon heavy cream
squeeze of lemon juice
1 tablespoon powdered sweetener

Instructions

Cake

Grease 2 ramekins, mugs or 1 microwave-safe bowl with melted butter. I used a glass dessert bowl.
Mix all dry ingredients - almond flour, sweetener and baking powder - in a separate bowl.
Add all wet ingredients and mix thoroughly with a fork. If you find your dough is too liquid add more almond flour.
Transfer batter into your bowl or mugs and level the top.
Microwave on high for 90 seconds.
Turn upside down onto a plate once cooled or enjoy straight from the bowl.

Glaze

Melt the butter, then stir in the cream, lemon juice and sweetener.
Let cool until the glaze begins to thicken. Spoon or pour over cake.

Video

Notes

2.7g net carbs per serving. Makes 2 servings.

Net carbs without the glaze: 2.4g. 164 calories without the glaze.

Option to add 1 teaspoon of poppy seeds.

My microwave operates at 900 watts and the cake cooked in 90 seconds to cook. Here's a quick overview of recommended baking times for other power levels:

600W = low power. 110+ seconds.
800W = 100 seconds.
900W = 90 seconds.
1000W = 80 seconds
1200W = 60-70 seconds.

Oven method: Bake at 180C / 350F electric or 160C / 320F fan for 12-15 minutes or until a knife inserted comes out clean.

Nutrition