Vanilla Keto Mug Cake

heaping tbsp almond flour (16 g/ 0.6 oz)

heaping tbsp coconut flour (12 g/ 0.4 oz)

vanilla bean powder or 1/2 tsp sugar-free vanilla extract (you can make your own)

baking soda

Erythritol or Swerve, or other healthy low-carb sweetener from this list (20 g / 0.7 oz)

large egg, free-range or organic

extra virgin coconut oil or butter, melted

Optional: 3-5 drops liquid stevia (I used Vanilla Stevia drops from SweetLeaf)

Optional topping: 2 tbsp whipped cream, coconut milk or full-fat yogurt and a pinch of cinnamon