Gluten-Free Peanut Butter Mug Cake

Mug with peanut butter cake inside for a single serve dessert.

4.41 from 22 votes

Gluten-Free Peanut Butter Mug Cake

An easy single-serving dessert that requires less than five minutes to make! Mix it up with your favorite add-ins to quench your sweet tooth the next time it's talking to ya.

Prep Time2

Cook Time1

Total Time3

Course: Dessert, Desserts & Treats, Single-Serve Desserts

Cuisine: American

Servings: Mug Cake

Calories: 357kcal

Author: Julia

Ingredients

3 Tbsp (24g) all-purpose flour packed and leveled*
¼ tsp baking powder
1 Tbsp (15ml) pure maple syrup**
2 Tbsp (30ml) creamy peanut butter
4 Tbsp (60ml) milk of choice***
1 tsp avocado oil optional
Pinch sea salt

Optional Additions:

1 to 2 Tbsp semi-sweet chocolate chips
¼ tsp pure vanilla extract
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.

Notes

*I use gluten-free all-purpose flour

**If you’d rather use cane sugar, use 1 tablespoon of granulated sugar (or sugar-free sweetener) and add an extra tablespoon of milk

***I use oat milk. Any kind of dairy or non-dairy milk will work.

The exact cooking time depends on the strength of your microwave; however, most microwaves will perform excellently under this 60-75 second timeframe.

An easy way of telling whether or not a treat is fully cooked is to take the internal temperature. Simply insert a digital thermometer into the center of the cake. If the cake reads 190 degrees Fahrenheit or higher, it is fully cooked. The optimal temperature range for treats like this is 190-200 degrees F.

Nutrition