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# Keto Peanut Butter Mug Cake
- URL: https://www.courtneyspantry.com/keto-peanut-butter-mug-cake/
- Published: 2026-09-23T11:00:42.000Z
- Updated: 2026-09-23T11:01:18.000Z
- Author: Courtney Skye
- Tags: Desserts, Recipes

**The perfect little dessert when a peanut butter craving hits!**

There are evenings when making a whole dessert just feels like too much, so this mug cake is exactly the kind of recipe I reach for. A few minutes is all it takes to turn that peanut butter craving into a warm, fluffy treat, and I love adding a little chocolate for an extra indulgent touch. 🤎

It’s soft, moist, and packed with peanut butter flavor, while still keeping things low-carb. Best of all, you can go from craving to dessert in about four minutes. Just grab a mug and enjoy! 😋

**Servings:** 2

## Ingredients

- 2 tbsp peanut butter (32 g), softened
- 1½ tbsp coconut flour (10 g)
- 1½ tbsp powdered keto sweetener (12 g), plus an additional ½ tsp (about 2 g) if you prefer it sweeter
- 3 tbsp heavy cream (45 ml) or coconut cream for a dairy-free option
- 1 medium egg (about 44 g)
- ¼ tsp baking powder (1 g)
- 1 tbsp dark chocolate, chopped (about 10 g) or sugar-free chocolate chips, optional

## Directions

1. Add the peanut butter, coconut flour, powdered sweetener, cream, egg, and baking powder to a tall microwave-safe mug or glass. Mix thoroughly with a fork until the batter is smooth.
2. Fold in the chopped chocolate or sugar-free chocolate chips, if using.
3. Microwave on high for up to **90 seconds**. Start checking at **50 seconds**, then continue in **10-second intervals** until the cake has pulled away from the sides and the center is cooked through.
4. Let it rest briefly, then enjoy warm.

## Notes

- Use softened peanut butter so it blends easily into the batter. Almond butter can also be used.
- You can divide the batter between **2 small ramekins** if preferred; the cooking time may need to be adjusted.
- For extra flavor, add **½ tsp vanilla extract (2.5 ml)** or **1 tsp cinnamon (about 3 g)**.
- Top with whipped cream or coconut cream and a few chocolate chips if desired. These optional decorations are **not included in the nutrition information**.
- This mug cake is best enjoyed warm.

## Macros

**Per serving**

- **Calories:** 280 kcal
- **Fat:** 22.9 g
- **Protein:** 10.3 g
- **Total Carbs:** 7.2 g
- **Fiber:** 3.6 g
- **Net Carbs:** **3.6 g**