Air Fryer Peanut Butter Mug Cake — If you’re looking for a quick and easy dessert that’s also delicious, this mug cake is perfect! Made with a few simple ingredients, it takes just minutes to cook in the air fryer. And the best part? It’s peanut buttery and chocolatey goodness all wrapped up in one!

Air Fryer Peanut Butter Mug Cake
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There is nothing like a homemade mug cake for dessert. Today, I made a simple Air Fryer Peanut Butter Mug Cake, which was awesome. Done in less than 10 minutes from start to finish, it is the perfect air fryer dessert.

There is nothing like a peanut butter dessert. Rich and flavorful, it has the right flavor for a late-night snack.

If you have not made a mug cake in the air fryer, you are so missing out. Air Fryer Mug Cakes are so easy to make and cook in minutes.

What Is An Air Fryer?

If you’re like me, you’re always on the lookout for new kitchen gadgets to try. Recently, I came across something called an air fryer, and I was curious about what it was. An air fryer is a small appliance that cooks food by circulating hot air around it. The end result is crispy food on the outside and tender on the inside. Air fryers are available in both countertop and tabletop models, and they come with a variety of presets so you can cook a variety of foods. If you’re looking for a new way to cook your favorite foods, an air fryer may be just what you need!

What Is A Mug Cake?

Mug cakes are the latest trend in home-baked desserts. They’re simple to make and only require a few ingredients that you probably have on hand. Plus, mug cakes are portion-controlled so that you won’t overindulge. We’ll show you how to make a decadent peanut butter mug cake in this recipe. Enjoy!

What Is A Peanut Butter Mug Cake?

Have you ever wished for a delicious, decadent dessert without all the hassles? If so, you’ll love this easy mug cake recipe that calls for just a few simple ingredients! Best of all, this peanut butter mug cake is ready in just minutes. So go ahead and indulge your sweet tooth tonight!

Ingredients Needed For Air Fryer Peanut Butter Mug Cake

This easy and decadent Air Fryer Peanut Butter Mug Cake recipe satisfies your peanut butter cravings. Using simple pantry staples like peanut butter, flour, and milk, this recipe offers a quick and delicious solution for a single-serving dessert, perfect for any time of day.

Ingredients Needed For Air Fryer Peanut Butter Mug Cake

Remember the step-by-step directions and detailed ingredient list are below, in the printable recipe card at the bottom of the post, as well as the nutritional information.

  • All-Purpose Flour: Forms the base of the cake, giving it structure and texture.
  • Granulated Sugar or Brown Sugar: Adds sweetness and a hint of caramel flavor to complement the peanut butter.
  • Baking Powder: Acts as a leavening agent to help the cake rise and become light and fluffy.
  • Milk: Adds moisture to the batter, resulting in a tender crumb.
  • Peanut Butter: Provides rich flavor and moisture to the cake, creating a deliciously nutty and indulgent dessert.
  • Optional Toppings: Chocolate chips, chopped peanuts, or a drizzle of chocolate syrup for extra indulgence.

How To Make Air Fryer Peanut Butter Mug Cake

To make an Air Fryer Peanut Butter Mug Cake, follow these simple steps:

How To Make Air Fryer Peanut Butter Mug Cake

Mix the flour, sugar, baking powder, and milk in a small bowl.

How To Make Air Fryer Peanut Butter Mug Cake

Fold in the peanut butter mixture until smooth.

How To Make Air Fryer Peanut Butter Mug Cake

Spoon into an oven-safe mug. Set the mug into the air fryer for 5-6 minutes at 330 degrees F, air fryer setting. Garnish with whipped cream or frosting, and sprinkle some peanut butter chips.

How To Make Air Fryer Peanut Butter Mug Cake

Pro Tips

  • Choose Creamy Peanut Butter: Creamy peanut butter works best for this recipe as it blends smoothly into the batter, ensuring a consistent texture throughout the cake.
  • Measure Ingredients Accurately: Use leveled measurements for the ingredients to ensure the correct balance of flavors and textures in your mug cake.
  • Adjust Sweetness: Depending on your preference, you can adjust the amount of brown sugar to make the mug cake sweeter or less sweet. Taste the batter before cooking and adjust accordingly.
  • Grease the Mug: To prevent sticking, lightly grease the inside of the mug with cooking spray or a thin layer of oil before adding the batter.
  • Experiment with Toppings: Get creative with toppings! Sprinkle chocolate chips, chopped peanuts, or a drizzle of caramel sauce over the batter before cooking for added flavor and texture.
  • Don’t Overmix: Mix the batter until just combined to avoid overmixing, which can result in a dense and tough cake. A few lumps in the batter are okay.
  • Adjust Cooking Time: Air fryers can vary in temperature, so keep an eye on the mug cake as it cooks. Start with the recommended cooking time and adjust as needed based on your air fryer’s settings.
  • Let it Cool: Allow the mug cake to cool for a minute or two before serving. This allows it to set slightly and prevents burning your mouth on hot cake or toppings.
  • Serve with Ice Cream: For an extra indulgent treat, serve your warm peanut butter mug cake with a scoop of vanilla ice cream or a dollop of whipped cream.
  • Enjoy Fresh: Mug cakes are best enjoyed warm, so serve immediately after cooking for the ultimate peanut buttery goodness!
Air Fryer Peanut Butter Mug Cake


Can I use crunchy peanut butter instead of creamy? Yes, you can use crunchy peanut butter if you prefer. Just keep in mind that the texture of the cake will be slightly different due to the added peanut pieces.

Can I make this mug cake ahead of time and reheat it later? While mug cakes are best enjoyed fresh, you can make the batter ahead of time and store it covered in the refrigerator for up to a day before cooking. Reheat in the microwave or air fryer before serving.

Can I make this mug cake gluten-free? Yes, you can use a gluten-free all-purpose flour blend to make this mug cake gluten-free. Ensure all other ingredients, including the peanut butter, are also gluten-free to avoid cross-contamination.

Can I omit the brown sugar or use a sugar substitute? You can omit the brown sugar if you prefer a less sweet cake. You can also use a sugar substitute such as erythritol or stevia, but keep in mind that it may alter the texture and flavor of the cake.

How do I know when the mug cake is done cooking? Insert a toothpick into the center of the cake. If it comes out clean or with a few moist crumbs, the cake is done. Avoid overcooking to prevent a dry cake.

Can I use a different type of milk, such as almond milk or coconut milk? Yes, you can substitute the milk with any dairy or non-dairy milk of your choice. Just keep in mind that the flavor and texture may vary slightly depending on the type of milk used.

Can I use a different flavor extract instead of vanilla? Yes, you can use other flavor extracts such as almond or maple for a different flavor profile. Adjust the amount according to your taste preference.

Can I cook multiple mug cakes at once in the air fryer? It’s best to cook one mug cake at a time to ensure even cooking and prevent overcrowding in the air fryer.

peanut butter mug cake

More Easy Air Fryer Recipes

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Air Fryer Peanut Butter Mug Cake

Air Fryer Peanut Butter Mug Cake

4.45 from 9 votes
Prep Time: 5 minutes
Cook Time: 6 minutes
Total Time: 11 minutes
Servings: 2 Servings


Do you love peanut butter cake, but don't want to spend hours in the kitchen baking it? Then this Air Fryer Peanut Butter Mug Cake is for you! With just a few simple ingredients and a few minutes in the air fryer, you'll be able to enjoy a delicious peanut butter cake that is perfectly moist and flavourful. So what are you waiting for? Start air frying your way to the perfect peanut butter mug cake today!
YouTube video


  • 3 tablespoons all-purpose flour
  • 2 tablespoons granulated sugar
  • 1 teaspoon baking powder
  • 3 tablespoons milk
  • 2 tablespoons creamy peanut butter


  • In a small bowl mix together the flour, sugar, baking powder and milk.
  • Fold in the peanut butter, mix until smooth.
  • Spoon into an oven safe mug.
  • Set the mug into the air fryer for 5-6 minutes at 330 degree F, air fryer setting.
  • Garnish with whipped cream or frosting, and sprinkle some peanut butter chips on top.
  • Plate, serve, and enjoy!


  • Air Fryer
  • Mug or Ramekin
  • Cooking Spray


Depending on the size of the mug or ramekin, this will either make 1 or 2 servings. 


Serving: 1ServingCalories: 197kcalCarbohydrates: 26gProtein: 6gFat: 9gSaturated Fat: 2gPolyunsaturated Fat: 2gMonounsaturated Fat: 4gCholesterol: 3mgSodium: 290mgPotassium: 137mgFiber: 1gSugar: 15gVitamin A: 36IUCalcium: 155mgIron: 1mg

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