Easy Keto Peanut Butter Mug Cake Recipe
Introduction
This Easy Keto Peanut Butter Mug Cake is a quick and satisfying treat for anyone following a low-carb lifestyle. Ready in just minutes, it combines rich peanut butter flavor with a soft, fluffy texture that’s perfect for a cozy snack.

Ingredients
- 2 tbsp peanut butter
- 2 eggs
- 4 tbsp almond flour
- 2 tbsp low carb sweetener
- 1 tsp vanilla extract
- 1/2 tsp baking powder
- 2 tbsp chocolate chips
- 1 tsp butter
Instructions
- Step 1: In a microwave-safe bowl, melt the peanut butter and butter together until smooth.
- Step 2: In a medium bowl, whisk together the almond flour, sweetener, and baking powder.
- Step 3: Stir in the eggs, vanilla extract, and melted peanut butter mixture until well combined. Then fold in the chocolate chips.
- Step 4: Divide the batter evenly between 2 ramekins or mugs. Microwave each for 1 minute, until puffed and set. Serve warm.
Tips & Variations
- For a nut-free version, substitute peanut butter with sunflower seed butter.
- Try adding a pinch of cinnamon or chili powder for a flavor twist.
- Use sugar-free chocolate chips to keep it fully keto-friendly.
Storage
These mug cakes are best enjoyed fresh but can be stored in an airtight container in the refrigerator for up to 2 days. Reheat gently in the microwave for about 30 seconds to restore warmth and softness.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use regular flour instead of almond flour?
While you can use regular flour, it will increase the carb count and alter the texture. Almond flour keeps the cake low-carb and tender.
What if I don’t have a microwave?
You can bake the batter in small ramekins in a preheated 350°F (175°C) oven for 12–15 minutes, or until set.
Print
Easy Keto Peanut Butter Mug Cake Recipe
- Total Time: 7 minutes
- Yield: 2 servings 1x
- Diet: Low Carb
Description
This Easy Keto Peanut Butter Mug Cake is a quick and delicious low-carb dessert that you can whip up in minutes. Combining creamy peanut butter, almond flour, and a hint of vanilla, this mug cake is perfect for a keto-friendly sweet treat that’s rich, moist, and surprisingly satisfying. Ready in under 5 minutes using a microwave, it’s ideal for those craving a simple, guilt-free dessert.
Ingredients
Wet Ingredients
- 2 tbsp peanut butter
- 2 eggs
- 1 tsp vanilla extract
- 1 tsp butter
Dry Ingredients
- 4 tbsp almond flour
- 2 tbsp low carb sweetener
- 1/2 tsp baking powder
Add-ins
- 2 tbsp chocolate chips
Instructions
- Melt Peanut Butter and Butter: In a microwave-safe bowl, melt the peanut butter and butter together until smooth and fully combined. This creates a creamy base for the cake.
- Mix Dry Ingredients: In a medium mixing bowl, whisk together the almond flour, low carb sweetener, and baking powder to evenly distribute the leavening and sweetener.
- Combine Wet and Dry Ingredients: Add the eggs, vanilla extract, and the melted peanut butter mixture to the dry ingredients. Stir everything until the batter is smooth and homogenous. Then fold in the chocolate chips for added texture and flavor.
- Portion and Microwave: Divide the batter evenly among 2 ramekins or microwave-safe mugs. Microwave each individually on high for about 1 minute or until the cake has puffed up and is set in the middle. Be careful not to overcook to avoid dryness.
- Serve Warm: Remove from microwave and serve immediately while warm for the best texture and flavor experience.
Notes
- You can substitute the chocolate chips with sugar-free or keto-friendly chocolate if preferred.
- Adjust the microwave time slightly depending on your microwave’s wattage to avoid under or overcooking.
- For a dairy-free option, use a vegan butter substitute.
- This recipe yields two small mug cakes, perfect for sharing or enjoying later.
- Prep Time: 5 minutes
- Cook Time: 2 minutes
- Category: Dessert
- Method: Microwaving
- Cuisine: American
Keywords: Keto mug cake, peanut butter dessert, low carb cake, microwave cake, quick keto dessert

