Go Back
5-Minute Microwave Keto Mayonnaise Cake Recipe

5-Minute Microwave Keto Mayonnaise Cake

A warm, moist, single-serving chocolate keto mug cake made with mayonnaise, almond flour, coconut flour, and cocoa powder. It cooks in the microwave in 60 to 90 seconds.
Print Recipe Pin Recipe
Prep Time 2 minutes
Cook Time 1 hour
Total Time 4 minutes
Servings: 1 servings
Ingredients Method Notes

Ingredients
  

Cake Ingredients
  • 1 Large egg
  • 2 tablespoons Full-fat, unsweetened mayonnaise
  • 2 tablespoons Finely ground almond flour
  • 1 tablespoon Coconut flour
  • 1 tablespoon Unsweetened cocoa powder
  • 1-2 tablespoons Granulated erythritol or another 1:1 keto sweetener
  • 1/2 teaspoon Baking powder
  • 1/2 teaspoon Vanilla extract
  • 1 pinch Salt

Method
 

Step-by-Step
  1. Lightly grease a wide microwave-safe mug or small ramekin. Beat the egg, mayonnaise, vanilla extract, and sweetener directly in the mug until smooth.
  2. Add the almond flour, coconut flour, cocoa powder, baking powder, and salt. Stir thoroughly until no dry pockets remain.
  3. Microwave on high for 60 seconds. Check the center, then continue in 10- to 15-second intervals until the cake is set but still moist; most microwaves take 75 to 90 seconds.
  4. Let the cake stand for about 1 minute before eating. Residual heat will finish setting the center without requiring the cake to be cooked completely dry.

Notes

Use full-fat mayonnaise without added sugar for the moistest texture. Do not overcook, since microwave cakes continue cooking as they rest. For a vanilla version, omit the cocoa powder and add 1 more tablespoon of almond flour. If the batter is unusually thick, stir in 1 teaspoon unsweetened almond milk.