This keto lemon mug cake is the ultimate summer dessert—light, fluffy, and bursting with fresh citrus flavor! It’s super moist, easy to make, and comes together in just minutes. Perfectly gluten-free, grain-free, and sugar-free, this single-serving lemon cake is a refreshing treat that satisfies your sweet cravings while keeping it low-carb
In a bowl, whisk the egg, coconut milk, water, melted coconut oil (or butter), lemon juice, and vanilla extract (if using).
Add the coconut flour, poppy seeds, sweetener, lemon zest, baking powder, and salt. Stir until well combined. If the batter is too thick, add an extra teaspoon of water.
Spoon the batter into a greased or microwave-safe mug. Smooth the top for even cooking.
Cook for 1 to 2½ minutes (depending on microwave wattage). Start with 1 minute, then continue in 10-second increments until the cake is set but still slightly moist.
Let it cool for a minute, then enjoy! Garnish with a lemon slice, extra zest, or a dollop of sugar-free whipped cream for an extra treat.