4.4 from 66 votes
Gluten-Free Peanut Butter Mug Cake
This Gluten-Free Peanut Butter Mug Cake is a quick single-serving treat made with a simple batter of gluten-free flour, peanut butter, maple syrup, and milk. The microwaved cake develops a soft, moist crumb with a peanut butter flavor. Optional additions like chocolate chips, vanilla extract, or cinnamon offer subtle variations. It’s an easy way to satisfy a sweet craving without baking a whole cake.
Prep Time
2 mins
Cook Time
1 min
Total Time
3 mins
Servings:
1
Mug Cake
Calories:
357 kcal
Course:
Dessert
Cuisine:
American
Ingredients
- 3 Tbsp (24g) all-purpose flour packed and leveled*
- ¼ tsp baking powder
- 1 Tbsp (15ml) maple syrup pure
- 2 Tbsp (30ml) peanut butter creamy
- 4 Tbsp (60ml) milk of choice
- 1 tsp avocado oil optional
- Pinch salt sea salt
Optional Additions:
- 1 to 2 Tbsp chocolate chips semi-sweet
- ¼ tsp vanilla extract pure
- ¼ tsp ground cinnamon
Instructions
- Add all of the ingredients to a microwave safe mug (or a small bowl or measuring cup) and mix until a smooth cake batter forms and all the lumps of flour have dissolved. There is no need to separate the wet ingredients from the dry ingredients as everything should mix together very easily. If you’d like, sprinkle extra chocolate chips on top of the cake batter.
- Microwave for 60 to 75 seconds (on the regular high setting), or until the center of the cake has set up. I recommend starting with 60 seconds, then adding 8-15 seconds if the cake looks like it still needs more time.
- Dig in and enjoy! For a special treat, serve the mug cake with a small scoop of vanilla ice cream and a glass of milk.
Cup of Yum
Notes
- Use gluten-free all-purpose flour to keep the mug cake gluten-free.
- If preferred, substitute maple syrup with granulated cane sugar plus an extra tablespoon of milk.
- Any dairy or non-dairy milk can be used; oat milk works well.
- Microwave time varies depending on your appliance; start with 60 seconds and increase in short increments.
- Checking that the internal temperature reaches 190-200°F confirms the cake is fully cooked.
Nutrition Information
Serving
1Mug Cake
Calories
357kcal
(18%)
Carbohydrates
43g
(14%)
Protein
12g
(24%)
Fat
15g
(23%)
Saturated Fat
2g
(10%)
Monounsaturated Fat
1g
(5%)
Sodium
170mg
(7%)
Fiber
3g
(12%)
Sugar
18g
(36%)
Nutrition Facts
Serving: 1 Mug Cake
Amount Per Serving
Calories 357
% Daily Value*
| Serving | 1Mug Cake | |
| Calories | 357kcal | 18% |
| Carbohydrates | 43g | 14% |
| Protein | 12g | 24% |
| Fat | 15g | 23% |
| Saturated Fat | 2g | 10% |
| Monounsaturated Fat | 1g | 5% |
| Sodium | 170mg | 7% |
| Fiber | 3g | 12% |
| Sugar | 18g | 36% |
* Percent Daily Values are based on a 2,000 calorie diet.