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Low Carb Coffee Cake Mug Cake - A Fast, Cozy Treat in Minutes

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Prep Time 5 minutes
Cook Time 2 minutes
Total Time 7 minutes
Servings: 1 servings
Ingredients Method

Ingredients
  

  • Almond flour: Finely ground blanched almond flour gives a tender crumb.
  • Coconut flour (optional but helpful): A small amount improves texture and helps absorb moisture.
  • Granular erythritol or allulose: Use your favorite low-carb sweetener. Adjust to taste.
  • Baking powder: For lift and a cake-like texture.
  • Cinnamon: The classic coffee cake flavor.
  • Salt: Just a pinch to balance sweetness.
  • Egg: Binds the batter and adds structure.
  • Unsweetened almond milk or heavy cream: Moistens the batter; heavy cream gives richer flavor.
  • Melted butter or coconut oil: Adds moisture and that buttery coffee cake taste.
  • Vanilla extract: Rounds out the flavor.
  • Optional add-ins: Chopped pecans or walnuts, a pinch of nutmeg, or a few sugar-free chocolate chips.

Method
 

  1. Choose your mug: Pick a microwave-safe mug that holds at least 12 ounces. Lightly grease it with butter or oil.
  2. Make the base batter: In a small bowl, whisk 3 tablespoons almond flour, 1 teaspoon coconut flour (optional), 1½–2 tablespoons granular sweetener, ¼ teaspoon baking powder, ¼ teaspoon cinnamon, and a tiny pinch of salt.
  3. Add the wet ingredients: Stir in 1 large egg, 1 tablespoon melted butter (or coconut oil), 1 tablespoon almond milk or heavy cream, and ½ teaspoon vanilla extract until smooth and thick, but pourable.
  4. Mix the crumble: In a separate small dish, combine 1 tablespoon almond flour, ½ tablespoon granular sweetener, ¼ teaspoon cinnamon, and ½ tablespoon melted butter. It should look like damp sand.
  5. Layer it: Pour half the batter into the mug. Sprinkle half the crumble. Add the remaining batter, then top with the rest of the crumble. For extra texture, add a few chopped nuts on top.
  6. Microwave: Cook on high for 60–90 seconds. Start checking at 60 seconds. The top should look set and spring back lightly. If it’s wet in the center, heat in 10–15 second bursts. Avoid overcooking.
  7. Rest: Let it sit for 1–2 minutes. This helps it finish setting and stay moist.
  8. Finish (optional): Drizzle with a tiny pat of melted butter or a spoonful of warm cream. Dust with a pinch of cinnamon or a light sprinkle of sweetener.
  9. Serve: Enjoy warm straight from the mug, or loosen the edges with a knife and flip onto a plate.