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5-minute keto lemon mug cake

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  • Recipe Name: 5-Minute Keto Lemon Mug Cake

  • Prep Time: 3 minutes

  • Cook Time: 60–90 seconds

  • Total Time: Under 5 minutes

  • Cuisine: Keto, Low-Carb, Gluten-Free

  • Intensity: Very Easy (Great for beginners!)

Nutritional Information (per serving, without glaze)

  • Calories: 310 kcal

  • Fat: 28g

  • Carbohydrates: 7g Net Carbs: 4g

  • Fiber: 3g

  • Protein: 8g

Note: Nutritional values are estimates and will vary based on the specific brands of ingredients used.

Ingredients

For the Cake:

  • 3 tbsp Almond Flour (super-fine blanched works best)

  • 1 tbsp Granulated Keto Sweetener (such as Erythritol, Monk Fruit, or Swerve)

  • 1/2 tsp Baking Powder (gluten-free if necessary)

  • 1 pinch Salt

  • 1 large Egg (room temperature)

  • 1 tbsp Unsalted Butter, melted (or coconut oil for dairy-free)

  • 1 tbsp Fresh Lemon Juice

  • 1 tsp Lemon Zest (about half a lemon)

For the Optional Glaze:

  • 1 tbsp Powdered Keto Sweetener (or grind your granulated sweetener in a spice grinder)

  • 1–2 tsp Fresh Lemon Juice

  • A tiny splash of unsweetened almond milk or water (if needed to thin)

Equipment You’ll Need

  • 1 standard-sized microwave-safe mug (approx. 12 oz capacity)

  • Small bowl or a fork for mixing

  • Measuring spoons

  • Zester or fine grater

Instructions: Let’s Bake!

Step 1: Prep Your Mug (1 minute)

Start by ensuring your mug is clean and dry. Because the cake will rise, it’s important to have a mug that holds at least 12 ounces. If you’re worried about sticking, you can give the inside of the mug a light spray with coconut oil, but it’s usually not necessary if you eat the cake directly from the mug.

Step 2: Mix the Dry Ingredients (30 seconds)

Add the almond flour, granulated sweetener, baking powder, and salt directly into your mug. Use a small fork or a mini whisk to stir these ingredients together thoroughly. Breaking up any clumps in the almond flour now will ensure a smooth cake texture.

Step 3: Add the Wet Ingredients (1 minute)

Crack the egg into the mug on top of the dry ingredients. Add the melted butter, lemon juice, and lemon zest.

Now, mix vigorously with your fork. Make sure you scrape the very bottom of the mug to incorporate all the dry flour mixture. The batter should be smooth, thick, and slightly fluffy. There should be no streaks of flour or egg white remaining. This is the most important step for a good texture.

Step 4: The Microwave (60–90 seconds)

Place the mug in the center of your microwave.

  • For a 1000-watt microwave: Cook on high for 60 seconds.

  • For a lower wattage microwave: Start with 75 seconds and check.

The cake is done when it has risen significantly (it will puff up over the rim of the mug—don’t panic!) and the top feels just set and springy to the touch. It should not look wet or gooey. Be careful not to overcook, as this will make the cake rubbery and dry. Microwaves vary wildly, so it might take a little trial and error the first time you make it.

Step 5: Cool (1 minute)

Carefully remove the mug from the microwave (it will be hot!). Let the cake cool in the mug for at least 2 minutes. It will deflate slightly as it cools, which is normal. This cooling period is crucial because the cake continues to cook slightly from residual heat and it allows the texture to set properly.

Step 6: Make the Glaze (While the Cake Cools) (30 seconds)

In a tiny dish or ramekin, combine the powdered sweetener with 1 teaspoon of lemon juice. Stir until smooth. If it’s too thick to drizzle, add the second teaspoon of lemon juice (or a tiny splash of almond milk) until you reach a drizzling consistency.

Step 7: Serve

Drizzle the zesty lemon glaze over the warm cake. You can eat it straight from the mug with a spoon for the ultimate cozy treat, or you can gently run a knife around the edge and tip it out onto a plate.

Enjoy your warm, fluffy, and tangy guilt-free dessert!

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