Easy Flourless 3 Ingredient Peanut Butter Mug Cake (KETO)

You probably remember those times when you are carving a sweet delight but you don’t have much energy to go and purchase ingredients from the store and then spend time in the kitchen.

Well, now you don’t need to be worried about having a sweet tooth! You will just need 3 basic ingredients that are mostly available at home and a few minutes to make this easy 3 Ingredient Peanut Butter Mug Cake.

This 3-ingredient peanut butter mug cake is a viral TikTok sensation, and I decided to give it a try!

This gluten-free mug cake is rich, light, fluffy, sweet, savory, and filled with flavor.

3 Ingredient Peanut Butter Cake is a healthy mug cake also known as keto mug cake. This mug cake can be enjoyed as a snack, breakfast, or a quick dessert on different occasions. So by following simple steps start the journey of making this soft and smooth 3 Ingredient Peanut Butter Mug Cake.

You can try our other mug cake recipes like Air Fryer Red Velvet Mug Cake (Eggless), Air Fryer Carrot Mug Cake, Air Fryer Oreo Mug Cake, and Air Fryer Chocolate Mug Cake.

WHY YOU WILL LOVE THIS RECIPE

1. Quick and Easy: Our flourless Peanut Butter Mug Cake is the perfect example of convenience. With just three basic ingredients and a microwave, you can have delicious mug desserts ready to enjoy in under five minutes.
2. Satisfyingly Simple: There’s something truly satisfying about creating a favorite dessert with minimal effort. This recipe requires no fancy equipment or advanced baking skills—just a mug, a spoon, and a few pantry staples.
3. Customizable Creativity: While the base recipe is delightfully delicious on its own, the best part is it also serves as a blank canvas for your creativity. You can add chocolate chips, chopped nuts, dark chocolate, or a swirl of caramel sauce to customize your mug cake.
4. Single-Serving Sensibility: Our keto Peanut Butter Mug Cake recipe is designed to satisfy your cravings without the temptation of an entire cake tempting you from the kitchen counter. It’s the perfect portion-controlled single serving dessert

INSTRUCTIONS TO MAKE 3 INGREDIENT PEANUT BUTTER MUG CAKE

REQUIRED INGREDIENTS

You need just 3 simple ingredients:

1. Creamy Peanut Butter: You will need ¼ cup of creamy peanut butter to add rich nutty flavor and moisture to the cake. For a healthier, organic option, you can use Natural peanut butter. It is peanut butter made from peanuts and typically contains minimal additional ingredients, such as salt. It’s often characterized by its creamy texture and rich peanut flavor, without added sugars or hydrogenated oils.
2. Granulated Sugar: You will need 1 tablespoon of granulated white sugar that provides sweetness and helps to balance the flavors.
3. Large Egg: You will need 1 large egg which acts as a binding agent and adds structure to the cake.

HOW TO MAKE 3 INGREDIENT PEANUT BUTTER MUG CAKE: STEP BY STEP

Step 1: Combine Peanut Butter and Sugar

In a microwave-safe mug, add 1/4 cup of creamy peanut butter and 1 tablespoon of granulated sugar. The creamy peanut butter provides a rich, nutty flavor and adds moisture to the cake, while the granulated sugar provides sweetness and helps to balance the flavors. Stir the peanut butter and sugar together until well combined.

Step 2: Add Egg and Mix

Once the peanut butter and sugar are combined, crack 1 large egg into the mug. The egg acts as a binding agent and adds structure to the cake. Whisk everything together until the egg is fully incorporated and the mixture is smooth and evenly combined.

Step 3: Microwave

Place the mug in the microwave and cook on high for 1 minute and 30 seconds to 2 minutes. Cooking time may vary depending on the wattage of your microwave, so keep an eye on the cake as it cooks.

The healthy Peanut Butter Mug Cake should rise and set during cooking, but it should still be slightly moist on top. Be cautious when removing the mug from the microwave, as it will be hot.

Step 4: Cool and Enjoy

Carefully remove the mug from the microwave and allow the cake to cool for a minute before enjoying it. You can either enjoy the cake straight from the mug or tip it out onto a plate.

The 3 Ingredient Peanut Butter Mug Cake is best enjoyed warm and can be served with a dollop of whipped cream or a scoop of ice cream for an extra indulgent treat. Enjoy!

TIPS AND TRICKS

• Ensure that the mug you use is microwave-safe to avoid any accidents or damage to your utensils.
• Feel free to adjust the sweetness of the cake by adding more or less sugar according to your taste preferences.
• Be careful not to overcook the mug cake, as it can become dry and rubbery. Keep an eye on it while microwaving and remove it when it’s just set but still slightly moist on top.
• This easy peanut butter mug cake recipe is best enjoyed warm, straight from the microwave.
• Take your time to thoroughly mix the ingredients to ensure a smooth and well-combined batter.
• Get creative by adding in your favorite mix-ins to enhance the flavor and texture of your mug cake.
• To prevent the cake from sticking to the sides of the mug, lightly grease the inside of the mug with cooking spray or a small amount of butter before adding the batter.
• Simply microwave 3 Ingredient Peanut Butter Mug Cake on high power for 1 minute and 30 seconds to 2 minutes.

STORAGE AND REHEATING

If you have leftovers of 3 Ingredient Peanut Butter Mug Cake (which is rare!), you can store them in an airtight container in the refrigerator for up to two days.

To reheat, simply microwave for 20-30 seconds until warm.

ADDITIONS

• Chocolate Chips: Sprinkle a handful of chocolate chips into the batter before microwaving for a gooey, chocolaty twist. 
• Chopped Nuts: Add a crunchy texture and nutty flavor by mixing in chopped nuts such as walnuts, pecans, or almonds.
• Cocoa Powder: For an extra chocolaty flavor, stir a teaspoon of cocoa powder into the batter before microwaving and enjoy chocolate peanut butter mug cake.
• Fruit Compote: Top your mug cake with a spoonful of your favorite fruit compote or jam for a fruity burst of flavor.
• Marshmallows: Add a fun and playful twist by topping your warm mug cake with mini marshmallows and briefly broiling them in the oven for a toasted finish.

SUBSTITUTIONS

• Nut Butters Variation: If you don’t have peanut butter on hand or have dietary restrictions, feel free to substitute it with other nut butters like almond butter, cashew butter, or sunflower seed butter for a different flavor profile. 
• Sugar Alternatives: Instead of granulated sugar, you can use alternative sweeteners such as honey, maple syrup, brown sugar, coconut sugar, or agave nectar.
• Gluten-Free Option: For a gluten-free version, ensure that your peanut butter and other ingredients are certified gluten-free.
• Dairy-Free Variation: This recipe is naturally dairy-free, but if you’re looking to avoid dairy altogether, make sure your peanut butter is free from any added dairy ingredients.

SERVE WITH

1. Top your warm mug cake with a dollop of whipped cream for an extra creamy and indulgent treat.
2. Pair your mug cake with fresh fruit such as sliced strawberries, raspberries, or banana slices for a refreshing and fruity accompaniment.
3. Enjoy your mug cake alongside a hot beverage such as coffee, tea, or hot chocolate for the perfect cozy treat.
4. Drizzle your warm mug cake with caramel sauce for an added touch of sweetness and decadence.
5. For a nutty twist, drizzle some Nutella or melted peanut butter over your mug cake for extra flavor.

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