Lemon Mug Cake

February 28, 2026

By Emma Waters

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A Cozy Lemon Mug Cake Recipe for Every Sweet Tooth

There’s something truly magical about the simplicity of a mug cake. As a child, I remember standing in our cozy kitchen, eyes wide with anticipation as I watched my mom mix and melt her special treats. The aroma of fresh lemon filled the air, mingling with warm memories and laughter. Today, I’m sharing that same comforting feeling with you through this delightful Lemon Mug Cake recipe—perfect for those days when you crave something tender, zesty, and just oh-so-good. Whether it’s a quiet afternoon or you’re celebrating a small win, this is a treat you’ll reach for time and time again.

This easy microwave mug cake is extra special because it packs in bright, fresh flavors that will transport you right back to those sunlit family moments. It’s not only quick and simple but also gluten-free if you’re using almond flour and coconut flour. Trust me, you’ll want to save this one for your “Cozy Treats” board, right alongside your easy weeknight dinners and creamy fall desserts!

Why You’ll Love This Recipe

  • Quick and Easy: This Lemon Mug Cake can be whipped up in under 5 minutes, making it a lifesaver for busy days.
  • Single Serving: Enjoy a delightful individual treat without the fuss of baking a full cake.
  • Bright and Zesty Flavor: The fresh lemon juice brings a refreshing twist that’s both uplifting and delicious.
  • Gluten-Free Option: With almond and coconut flour, it caters to a variety of dietary needs.
  • Savory-Sweet Comfort: This cake offers a tender bite with just the right amount of sweetness, perfect for any occasion.

Ingredients You’ll Need for Lemon Mug Cake

Gather these simple ingredients to create your Lemon Mug Cake masterpiece:

  • 2 tablespoons almond flour
  • 1 tablespoon coconut flour
  • 1/4 teaspoon baking powder
  • 1 tablespoon granulated sweetener (like erythritol)
  • 1 egg
  • 2 tablespoons lemon juice
  • 1/2 teaspoon vanilla extract
  • Pinch of salt

Let’s Make It Together

  1. In a microwave-safe mug, mix the almond flour, coconut flour, baking powder, sweetener, and salt until well combined.
  2. Whisk in the egg, lemon juice, and vanilla extract until the batter is smooth and creamy.
  3. Microwave on high for about 1 minute, or until the cake is set in the middle (microwave wattages may vary, so keep an eye on it).
  4. Allow it to cool slightly before enjoying the lovely aroma and tender texture.

Fun Ways to Customize It

  • Zesty Lemon Poppy Seed: Add a tablespoon of poppy seeds to the batter for a delightful crunch and extra flavor.
  • Creamy Blueberry Swirl: Toss in a few fresh blueberries before microwaving, and watch as they burst into juicy sweetness.
  • Indulgent Coconut Cream: Top with a dollop of whipped coconut cream for an indulgent finish.
  • Rich Chocolate Drizzle: A drizzle of sugar-free melted chocolate can transform your lemon cake into a decadent treat.

Chef Emma’s Helpful Tips

  • Make-Ahead Magic: For extra convenience, prep your dry ingredients in advance and store them in an airtight container. When you’re ready for a treat, just add the wet ingredients.
  • Ingredient Swaps: If you don’t have almond flour, you can try sunflower seed flour for a nut-free version or regular flour if gluten isn’t a concern.
  • Microwave Power Adjustments: Since microwave wattages can vary, start with 45 seconds and add time in 15-second increments until it’s set to avoid overcooking.
  • Enjoying Leftovers: If you somehow have leftovers, store them in an airtight container in the fridge for up to 2 days. Reheat gently in the microwave.

Nutrition Information per Serving

  • Serving Size: 1 mug cake
  • Calories: 180
  • Carbohydrates: 10g
  • Sugar: 1g
  • Fat: 12g
  • Protein: 6g
  • Sodium: 130mg

Frequently Asked Questions

  • Can I make this ahead? Yes! You can prepare the dry ingredients in advance and store them in an airtight container.
  • Can I use different ingredients? Absolutely! Feel free to swap out almond flour for another flour of your choice, keeping in mind it may affect texture and taste.
  • How do I store leftovers? Store leftovers in an airtight container in the fridge for up to 2 days.
  • How long does it last? This mug cake is best enjoyed fresh but can be stored in the fridge short-term.

Final Thoughts

This Lemon Mug Cake is the perfect way to indulge in a little slice of sunshine whenever the mood strikes. It’s an easy, comforting treat that brings together the nostalgic warmth of home and the joyful brightness of fresh lemons. I can’t wait for you to try it for yourself! Save this Lemon Mug Cake to your “Cozy Treats” board so it’s ready when you need a sweet moment just for you. Enjoy every lovely, zesty bite!

Lemon Mug Cake

A quick and easy Lemon Mug Cake that is zesty, gluten-free, and perfect for individual servings.
Prep Time 5 minutes
Cook Time 1 minute
Total Time 6 minutes
Course Dessert, Snack
Cuisine American
Servings 1 serving
Calories 180 kcal

Ingredients
  

For the mug cake

  • 2 tablespoons almond flour
  • 1 tablespoon coconut flour
  • 1/4 teaspoon baking powder
  • 1 tablespoon granulated sweetener (like erythritol)
  • 1 whole egg
  • 2 tablespoons lemon juice
  • 1/2 teaspoon vanilla extract
  • 1 pinch salt

Instructions
 

Preparation

  • In a microwave-safe mug, mix the almond flour, coconut flour, baking powder, sweetener, and salt until well combined.
  • Whisk in the egg, lemon juice, and vanilla extract until the batter is smooth and creamy.
  • Microwave on high for about 1 minute, or until the cake is set in the middle (microwave wattages may vary, so keep an eye on it).
  • Allow it to cool slightly before enjoying the lovely aroma and tender texture.

Notes

For extra convenience, prep your dry ingredients in advance and store them in an airtight container. If you have leftovers, store them in an airtight container in the fridge for up to 2 days. Reheat gently in the microwave.

Nutrition

Serving: 1gCalories: 180kcalCarbohydrates: 10gProtein: 6gFat: 12gSodium: 130mgSugar: 1g
Keyword Gluten-Free, Lemon Mug Cake, Quick Dessert
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