Name: Peanut Butter Cake in a Mug Recipe
Prep time: 5 min
Cook time: 1 min 45 s
Total time: 7 min
Cuisine: American
Ingredients: 4 tablespoons self-rising flour; 3 tablespoons granulated sugar; 4 tablespoons creamy peanut butter; 3 tablespoons whole milk; 3 tablespoons salted sweet cream butter, melted; ½ teaspoon pure vanilla extract; 1 tablespoon creamy peanut butter

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Introduction

This Peanut Butter Cake in a Mug is a quick and satisfying dessert that’s perfect for any time you crave something sweet and nutty. Ready in just a few minutes, it’s an easy single-serving treat that combines rich peanut butter flavor with a moist, fluffy texture.

A white mug with a small rocket drawing on the side holds a baked dessert with two layers visible: the bottom layer is a soft, crumbly, brown baked cake filling the mug, and the top layer is a smooth, shiny, light brown peanut butter spread unevenly over the surface. The mug sits on a white marbled plate with a silver spoon resting next to it. In the background, there is a bowl filled with creamy peanut butter and a tall glass of milk, all placed on a white marbled surface. Photo taken with an iphone --ar 4:5 --v 7

Ingredients

4 tablespoons self-rising flour
3 tablespoons granulated sugar

4 tablespoons creamy peanut butter
1 tablespoon creamy peanut butter (optional garnish)

3 tablespoons whole milk
3 tablespoons salted sweet cream butter, melted

½ teaspoon pure vanilla extract

Instructions

Step 1: Add the self-rising flour and granulated sugar to a 14-ounce microwave-safe mug. Stir well to combine the dry ingredients evenly.
Step 2: Add the creamy peanut butter, whole milk, melted butter, and vanilla extract to the mug. Stir thoroughly until the mixture is smooth and fully incorporated.

Step 3: Microwave the mug cake for 1 minute 30 seconds to 1 minute 45 seconds, adjusting time as needed based on your microwave’s power. The cake should rise and be set but still moist.
Step 4: Let the cake cool for a few minutes before serving. If desired, add 1 tablespoon of peanut butter on top while the cake is warm. The heat will melt it, allowing you to gently spread it across the surface for extra flavor.

Tips & Variations

Use natural peanut butter for a more intense peanut flavor and less sweetness.

Swap whole milk for almond or oat milk to make it dairy-free.
Add a pinch of cinnamon or a few chocolate chips for extra flavor and texture.
Make sure to use a microwave-safe mug at least 14 ounces in size to prevent overflow.

Storage

This mug cake is best enjoyed fresh but can be stored in an airtight container in the refrigerator for up to 2 days. To reheat, microwave for about 20-30 seconds until warmed through, being careful not to dry it out.

How to Serve

Two white mugs sit on a round wooden board, each filled with a soft, crumbly dessert that is light brown with a slightly cracked texture on top. One mug shows a smooth, creamy caramel-like sauce drizzled unevenly over the dessert’s surface. The other mug has a spoon scooping out a chunk, revealing the moist, dense interior that is a warm golden color with some syrupy spots. A silver spoon rests on the wooden board near the top right mug. The background is a white marbled surface visible around the board. photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use regular flour instead of self-rising flour?

You can use regular all-purpose flour, but you will need to add 1½ teaspoons of baking powder and ⅛ teaspoon of salt to replace the self-rising flour’s leavening.

What if my microwave is very powerful or weak?

Microwave times vary by model. Start checking the cake at 1 minute 30 seconds and add small increments of 10-15 seconds until the cake is cooked through but still moist.