The Fluffiest Peanut Butter Mug Cake Recipe Ever

Whipping up a quick peanut butter mug cake satisfies those sudden sweet cravings in minutes.

Creamy and rich, this treat comes together with minimal effort and maximum flavor.

Microwave magic turns simple ingredients into a decadent dessert that feels like a personal indulgence.

Soft, warm, and incredibly moist, each spoonful delivers pure comfort without complex baking skills.

Pantry staples become your secret weapon for instant gratification.

No complicated techniques or fancy equipment stand between you and this delightful single-serving delight.

Grab a mug, mix the ingredients, and treat yourself to a delectable moment of pure bliss.

Why This Peanut Butter Mug Cake Is a Must-Try

• Satisfy Sweet Cravings Instantly: Grab a mug and transform basic ingredients into a decadent dessert that takes minimal effort and delivers maximum flavor.
• Customize Your Comfort: Mix and match toppings like chocolate chips, whipped cream, or a sprinkle of powdered sugar to personalize your single-serving treat without complicated techniques.
• Create Stress-Free Dessert Magic: No fancy baking skills required – this recipe welcomes kitchen beginners and provides a quick solution for sudden sugar cravings with minimal cleanup and maximum deliciousness.
• Perfect Solo Indulgence: Designed for those moments when you want something sweet without preparing an entire cake, this mug cake offers portion control and immediate gratification for one hungry person.

What Goes into a 5-Minute Peanut Butter Mug Cake

• All-Purpose Flour: A fine, white powder that helps create the cake's structure and provides a soft texture.
• Granulated Sugar: Adds sweetness and helps to create a tender crumb in the mug cake.
• Baking Powder: A leavening agent that helps the cake rise and become light and fluffy.
• Salt: Enhances the overall flavor and balances the sweetness of the cake.

• Creamy Peanut Butter: Provides rich, nutty flavor and moisture to the mug cake.
• Milk, Non-Dairy Milk: Helps to bind the ingredients and create a smooth, creamy batter.
• Vanilla Extract: Adds a warm, sweet aroma and depth of flavor to the dessert.

• Extra Peanut Butter: Offers an additional layer of peanut butter flavor and creates a delightful gooey texture when melted.

Steps to Make Your Peanut Butter Mug Cake Fast

Step 1: Combine Dry Elements

Grab a microwave-safe mug and toss in flour, sugar, baking powder, and salt. Whisk these ingredients thoroughly, ensuring no sneaky lumps remain. This creates the perfect foundation for your speedy dessert.

Step 2: Blend Wet Components

Pour in creamy peanut butter, milk, and vanilla extract. Stir everything with a fork until the mixture transforms into a silky, smooth batter. Make sure to scrape down the mug’s sides so no dry ingredients escape your delightful creation.

Step 3: Zap in Microwave

Place the mug in the microwave and blast on high for 30-45 seconds. Watch carefully – you want a risen cake that’s cooked through but not dried out. The texture should be soft and springy.

Step 4: Dress Up Your Treat

For extra indulgence, drizzle additional peanut butter on top while the cake is still warm. The heat will help the topping melt into delectable ribbons of goodness.

Step 5: Serve and Savor

Allow the cake to cool for a quick minute (the mug will be scorching!). Then dive right in and enjoy your personally crafted mug cake directly from its cooking vessel. This speedy dessert goes from ingredients to deliciousness in mere minutes!

Helpful Tips for a Great Peanut Butter Mug Cake

• Microwave Magic: Use a 12-ounce mug to prevent overflow during cooking.
• Texture Perfection: Mix ingredients thoroughly to avoid flour pockets and ensure even cooking.
• Dairy-Free Delight: Swap cow's milk with almond, soy, or oat milk for a plant-based version.
• Quick Cooling Trick: Let the mug cake rest for one minute to prevent burning your tongue and allow the texture to set.
• Flavor Boost: Sprinkle chocolate chips or drizzle honey on top for extra richness and sweetness.

Peanut Butter Mug Cake Mix-Ins and Options

• Gluten-Free Peanut Butter Mug Cake: Replace all-purpose flour with almond flour or gluten-free flour blend for a celiac-friendly version.
• Chocolate Peanut Butter Mug Cake: Add 1 tablespoon of cocoa powder to the dry ingredients for a rich chocolate flavor.
• Vegan Peanut Butter Mug Cake: Swap milk with almond milk, use coconut oil instead of peanut butter, and add a flax egg for binding.
• Protein-Packed Mug Cake: Mix in a scoop of peanut butter protein powder to boost nutritional content and create a more filling dessert.

Pairings to Go with Peanut Butter Mug Cake

• Pair with Creamy Chocolate Milkshake: Blend rich vanilla ice cream with cocoa powder and a splash of milk for a decadent drink that amplifies the peanut butter cake's nutty warmth.
• Complement with Vanilla Bean Drizzle: Create a quick vanilla bean sauce by mixing powdered sugar, vanilla extract, and a touch of cream to add elegant sweetness that balances the cake's dense texture.
• Match with Crispy Caramel Crunch: Sprinkle crushed toffee bits or caramel popcorn on top of the warm mug cake to introduce a delightful crunch and enhance the dessert's overall flavor complexity.
• Serve alongside Cold Brew Coffee: Pour a chilled cold brew with a hint of caramel syrup to provide a robust, slightly bitter contrast that cuts through the cake's rich, sweet profile.

Store and Enjoy Leftover Peanut Butter Mug Cake

• Store leftover mug cake in an airtight container in the refrigerator for up to 2 days. Cover with plastic wrap to prevent drying out and preserve moisture.
• Wrap the cooled mug cake tightly in plastic wrap, then place in a freezer-safe bag. Freeze for maximum 1 month. Label with the date to track freshness.
• Warm the refrigerated cake for 15-20 seconds on medium power. Check at 10-second intervals to avoid overcooking and maintain soft texture.
• If eating within 4 hours, leave the mug cake on the counter uncovered. Consume within the same day for best taste and texture.

Quick FAQs About Peanut Butter Mug Cake

• Is this recipe suitable for people with dietary restrictions?

This recipe contains gluten from all-purpose flour and dairy from milk. For gluten-free options, use gluten-free flour. For dairy-free, substitute milk with almond, soy, or oat milk.

• Can I make this recipe without a microwave?

While microwave is recommended for quick cooking, you can bake the batter in a ramekin at 350°F for 10-12 minutes. Just adjust cooking time and watch carefully.

• How do I prevent my mug cake from becoming rubbery or dry?

Mix ingredients thoroughly, don’t overmix, and microwave in short intervals. Check at 30 seconds and avoid overcooking. The key is to stop heating when the cake looks just set.

Peanut Butter Mug Cake Recipe

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4.8 from 14 reviews

• Total Time: 3 minutes
• Yield: 1 1x

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Description

Indulgent “peanut butter mug cake” delivers instant dessert gratification with minimal effort and maximum flavor. Microwave magic turns simple ingredients into a rich, warm treat that satisfies sweet cravings in just minutes.

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Ingredients

Scale 1x2x3x

Main Ingredients:

• 2 tablespoons creamy peanut butter
• 3 tablespoons milk (or any non-dairy alternative)
• 4 tablespoons all-purpose flour

Dry Ingredients:

• 2 tablespoons granulated sugar
• 1/4 teaspoon baking powder
• 1/8 teaspoon salt

Flavor Enhancers:

• 1/2 teaspoon vanilla extract
• Optional: extra peanut butter for topping

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Instructions

1. Combine dry ingredients like flour, sugar, baking powder, and salt in a microwave-safe mug, ensuring no clumps remain.
2. Incorporate peanut butter, milk, and vanilla extract into the dry mixture, stirring thoroughly until a smooth, consistent batter forms.
3. Microwave the cake for 30-45 seconds at high power, watching carefully to prevent overcooking and maintain a moist texture.
4. Check cake doneness by ensuring the center is set but not dry; the cake should rise slightly during cooking.
5. Optional: While cake is still warm, add an extra dollop of peanut butter on top to create a luscious, melting effect.
6. Allow cake to rest for one minute to cool slightly, as the mug will be extremely hot to handle immediately.
7. Serve directly in the mug for a quick, indulgent single-serving dessert that can be enjoyed warm.

Notes

• Customize milk alternatives like almond, oat, or soy milk for different dietary needs without compromising texture.
• Swap traditional peanut butter with sunflower seed butter or almond butter for nut-free versions, ensuring everyone can enjoy this quick dessert.
• Reduce sugar by using monk fruit sweetener or stevia for a lower-calorie option that maintains the cake’s delightful sweetness.
• Prevent dry cake by watching microwave time closely, as wattages vary, and stopping cooking the moment the cake looks set but still slightly moist.

• Prep Time: 2 minutes
• Cook Time: 1 minute
• Category: Desserts, Snacks
• Method: Microwaving
• Cuisine: American

Nutrition

• Serving Size: 1
• Calories: 350
• Sugar: 14 g
• Sodium: 160 mg
• Fat: 19 g
• Saturated Fat: 3 g
• Unsaturated Fat: 16 g
• Trans Fat: 0 g
• Carbohydrates: 37 g
• Fiber: 2 g
• Protein: 10 g
• Cholesterol: 0 mg