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A homemade almond flour mug cake in a white mug on a kitchen table, photographed from above in natural light.

Almond Flour Mug Cake

A 5-minute keto-friendly almond flour mug cake that’s fluffy, gluten-free, and perfect for quick dessert cravings.
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Course: Dessert, Snack
Cuisine: American, Keto-Friendly
Prep Time: 3 minutes
Cook Time: 2 minutes
Total Time: 5 minutes
Servings: 1 mug
Calories: 330kcal
Author: Nicole Harper
Cost: $2–$3

Equipment

  • 1 Microwave-safe mug At least 12 oz capacity
  • 1 Small whisk or fork For mixing batter
  • 1 Measuring spoons For dry and wet ingredients
  • 1 Microwave 800–1000W ideal
  • Small bowl Optional, for melting butter or coconut oil

Ingredients

Main Ingredients

  • 3 tablespoon Almond flour Use fine blanched almond flour
  • 1 large Egg Room temperature preferred
  • 1 tablespoon Butter or coconut oil Melted
  • 1 tablespoon Sweetener Monk fruit, erythritol, or preferred low-carb option
  • ¼ teaspoon Baking powder For fluffiness
  • ¼ teaspoon Vanilla extract Optional for flavor
  • 1 pinch Salt Balances sweetness

Optional Add-ins

  • Chocolate chips, berries, or nuts For flavor variation

Instructions

  • Mix almond flour, baking powder, sweetener, and salt in a mug.
  • Add egg, melted butter, and vanilla; stir until smooth.
  • Let batter rest for 30 seconds.
  • Microwave for 60–90 seconds until set.
  • Cool slightly, add toppings, and serve.

Notes

Customize with chocolate chips, berries, or nuts. Adjust microwave time based on your wattage. Letting the batter rest improves texture!

Nutrition

Serving: 120g | Calories: 330kcal | Carbohydrates: 7g | Protein: 11g | Fat: 29g | Saturated Fat: 7g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 17g | Cholesterol: 180mg | Sodium: 220mg | Potassium: 180mg | Fiber: 3g | Sugar: 2g | Vitamin A: 320IU | Calcium: 120mg | Iron: 1.2mg