Keto Peanut Butter Mug Cake: A Quick and Easy Treat
Sometimes you need a dessert that’s fast, easy, and oh-so-satisfying. Enter the Keto Peanut Butter Mug Cake—a perfect single-serving dessert ready in minutes. It’s moist, peanut-buttery, and just sweet enough to curb your cravings without sabotaging your keto goals.
This recipe has been my go-to for late-night cravings, and the best part? It’s all done in the microwave, so there’s no need to heat the oven. Whether you’re enjoying it solo or sharing the recipe with a fellow keto enthusiast, this mug cake is sure to become a favorite.
Why You’ll Love This Recipe
- Super Quick: Ready in less than 5 minutes from start to finish.
- Minimal Cleanup: Made directly in a mug—less mess, fewer dishes.
- Keto-Friendly: Low in carbs and high in healthy fats, keeping you in ketosis.
- Customizable: Add your favorite keto toppings for extra flair.
Ingredients
Here’s what you’ll need to whip up this easy mug cake:
- 2 tbsp peanut butter (unsweetened, creamy or chunky)
- 1 tbsp coconut flour
- 1 tbsp erythritol (or your favorite keto sweetener)
- 1/2 tsp baking powder
- 1 large egg
- 1 tbsp unsweetened almond milk
- 1/4 tsp vanilla extract
- Pinch of salt
Instructions
Step 1: Prepare the Mug
- Choose a microwave-safe mug or ramekin with at least an 8-ounce capacity. Lightly grease it with butter or nonstick spray to prevent sticking.
Step 2: Mix the Ingredients
- In the mug, combine peanut butter, egg, almond milk, and vanilla extract. Stir until smooth.
- Add coconut flour, erythritol, baking powder, and a pinch of salt. Mix until you have a smooth, lump-free batter.
Step 3: Microwave the Cake
- Microwave the mug on high for 60–75 seconds. The exact time will depend on your microwave’s wattage, so start checking at 60 seconds.
- The cake should rise slightly and look set on top. Avoid overcooking, as it can become dry.
Step 4: Cool and Enjoy
- Let the mug cake cool for 1–2 minutes before digging in. Serve as is, or top with keto whipped cream, sugar-free chocolate chips, or a sprinkle of chopped nuts.
Macro Breakdown (Per Serving)
- Serving Size: 1 mug cake
- Calories: 225
- Fat: 18g
- Protein: 8g
- Total Carbs: 8g
- Fiber: 4g
- Net Carbs: 4g
Nutritional Benefits
- Peanut Butter: Packed with healthy fats and a good source of protein, keeping you full longer.
- Coconut Flour: Low in carbs and high in fiber, aiding digestion.
- Eggs: Rich in protein and essential nutrients like choline.
- Erythritol: A keto-friendly sweetener that doesn’t spike blood sugar levels.
Preparation Time
- Prep Time: 3 minutes
- Cook Time: 1–2 minutes
- Total Time: 5 minutes
Tips and Variations
Tips:
- Don’t Skip the Grease: A lightly greased mug ensures the cake slides out easily if you want to plate it.
- Mix Well: Make sure all ingredients are combined thoroughly for an even texture.
- Microwave Power: Cooking times can vary, so check your cake early to prevent overcooking.
Variations:
- Chocolate Peanut Butter Mug Cake: Stir in 1 tsp cocoa powder or a few sugar-free chocolate chips.
- Nut Butter Swaps: Use almond butter or sunflower seed butter for a twist.
- Spicy Kick: Add a pinch of cinnamon or cayenne for a warm, spicy note.
Keto Notes
- Peanut Butter: Choose unsweetened peanut butter to avoid hidden sugars.
- Coconut Flour: A little goes a long way! Avoid using too much as it absorbs a lot of liquid.
- Sweetener: Adjust the sweetness to your taste. Some keto-friendly options include erythritol, stevia, or monk fruit.
Common FAQs
1. Can I Make This Mug Cake Without Coconut Flour?
Yes! Replace coconut flour with 2 tablespoons of almond flour. The texture will be slightly different but equally delicious.
2. What If I Don’t Have a Microwave?
You can bake the mug cake in an oven-safe ramekin at 350°F (175°C) for about 10–12 minutes.
3. Can I Double the Recipe?
Yes, but make sure to use a larger mug or bowl to accommodate the extra batter. Cooking time may increase slightly.
4. Is This Suitable for Dairy-Free Diets?
Absolutely! Use non-dairy milk like almond or coconut milk, and grease the mug with coconut oil instead of butter.
Friendly Wrap-Up
There you have it—a quick and simple Keto Peanut Butter Mug Cake that’s perfect for satisfying your sweet tooth while staying on track with your keto goals. This recipe is a lifesaver on busy days or when a craving hits unexpectedly.
I'd love to hear about how your cup cake turns out! Feel free to experiment with toppings or mix-ins and make it your own. Share your creations and tag me in your photos—I can’t wait to see your delicious results.