Peanut Butter Mug Cake Recipes: Fast, Easy & So Tasty!

Peanut butter mug cake recipes are excellent for anyone who wants a quick, savory dessert with minimal work. 

These recipes come together in mere minutes and require very few ingredients, making them perfect when you are short on time but want that little something sweet. 

You can ensure a unique experience whether you choose the egg-free peanut butter mug cake recipe or the simple three-ingredient version. I have made it a hundred times and love how versatile the recipe is; some toppings here, a bit of chocolate drizzle there, or sprinkle a little jelly in for a cool spin! 

If you want to explore healthier options, you can try side-by-side healthful peanut butter mug cake recipes in your kitchen.

Why I love this recipe

There are many reasons why I adore this peanut butter mug cake recipe! Above all, it’s incredibly fast; in just a few minutes, you can go from craving something sweet to enjoying a warm, gooey dessert. The recipe requires no fancy ingredients or complicated steps—just straightforward, satisfying goodness. Everyone can agree that sometimes they need a quick, decadent treat, and this recipe is perfect for that.

What makes it even better is its flexibility. It’s easy to modify to suit your tastes. For a gluten-free version, you can use almond flour; you can add chocolate chips for extra indulgence or swirl in some jam for a delightful PB&J twist. The options are limitless! 

The peanut butter really takes center stage, and each bite of the cake is rich and comforting. This mug cake has quickly become my favorite treat—whether it’s a late-night snack, a sweet afternoon pick-me-up, or something to share with friends. Plus, it’s a single-serving dessert, so there won’t be any leftovers to tempt you for days. 

If you’re looking for a dessert that is easy, quick, and delicious, you’ll want to make this peanut butter mug cake again and again. This recipe is genuinely life-changing! And the best part is that you don’t need an egg to create a tasty mug cake. There are several excellent egg alternatives that will provide the ideal flavor and texture.

Can I Make a Cake in a Mug Without an Egg?

Yes, you can definitely make a cake in a mug without an egg! There are several egg substitutes you can use to get a moist, fluffy cake without compromising the texture or flavor.

Egg Substitutes for Mug Cakes

1. Applesauce: Use about 2 tablespoons of unsweetened applesauce to replace one egg. It adds moisture and a slight sweetness, which works well in most mug cakes.
2. Mashed Banana: 2 tablespoons of mashed ripe banana can also replace one egg. It provides natural sweetness and a soft, moist texture, which is perfect for cakes like peanut butter mug cakes.
3. Flaxseed Egg: To make a flax egg, combine 1 tablespoon of ground flaxseed with 3 tablespoons of water. Let it sit for a few minutes to thicken. This acts as a great binding agent and adds a subtle nutty flavor, which complements the peanut butter in your cake.
4. Yogurt or Buttermilk: You can replace one egg with about 3 tablespoons of yogurt or buttermilk. This will add moisture and a slight tang to the cake, which balances out the sweetness.
5. Silken Tofu: Blend 2 tablespoons of silken tofu until smooth and use it to replace one egg. This will create a rich, fudgy texture and works really well in chocolate or peanut butter mug cakes.
6. Baking Powder & Oil: In some cases, you can use a combination of baking powder (1 tsp) and oil (1 tbsp) to replace the egg. This will help the cake rise and stay moist.

Pro Tips:

• When using substitutes like applesauce, mashed banana, or yogurt, you may need to adjust the amount of flour slightly to get the right consistency. If the batter feels too thick, simply add a teaspoon or two of milk (dairy or non-dairy).

With these egg-free options, you can enjoy a quick, delicious mug cake whenever the craving strikes—no eggs required!

How To Make a Peanut butter mug cake recipes

Recipe Overview

If you’re seeking simple, fast, and flavorful peanut butter mug cake recipes, you’ve come to the correct place. This single-serve dessert is rich, soft, and studded with melty chocolate chips. This recipe requires no fancy tools or lengthy preparation—all you need is a single mug, a few ingredients, and a microwave.

• Prep Time: 5 minutes
• Cook Time: 1 minute
• Total Time: 6 minutes
• Cuisine: American
• Course: Dessert
• Difficulty: Easy
• Yield: 1 mug cake
• Calories: ~430 kcal

Equipment

You don’t need anything fancy to make this peanut butter mug cake. That’s what I love most about it—everything you need is probably already in your kitchen:

• Microwave-safe mug (8 oz or larger)
• Spoon (for mixing)
• Measuring spoons
• Measuring cups

Ingredients

Here’s what you need to make this creamy, chocolatey mug cake:

• 1 tbsp vegetable oil
• 1 tbsp brown sugar
• 1 egg white
• 2 tbsp creamy peanut butter
• 3 tbsp all-purpose flour
• ¼ tsp baking powder
• 1 tbsp chocolate chips

Instructions

1. Grab your mug:  Use a microwave-safe mug that holds at least 8 oz. Please ensure it is clean and ready, as greasing is not necessary.
2. Mix wet ingredients:  In the mug, stir together the vegetable oil, brown sugar, and egg white until smooth. Then add the peanut butter and mix again until well blended.
3. Add dry ingredients: Sprinkle in the flour and baking powder. Stir until everything comes together. Don’t overmix—just make sure there are no dry spots.
4. Toss in the chocolate chips:  Fold in the chocolate chips gently. They’ll melt into the cake and give those perfect little chocolatey bites.
5. Microwave it: Microwave on high for about 60–75 seconds. Start checking at the 60-second mark. The cake should be puffed up but still moist in the center.
6. Cool and enjoy: Let it cool for a minute or two—trust me, it’s hot! Grab a spoon and dig right in.

Here Are My Secret Tips for Making the Perfect Peanut butter mug cake recipes

• Don’t Overmix: A key to a light and fluffy mug cake is not overmixing the batter. Simply mix the ingredients until they are thoroughly combined, and you’re ready to proceed!
• Experiment with Flavors: Feel free to get creative by adding a pinch of cinnamon or a dash of vanilla extract for an extra layer of flavor.
• Top It Off: Top your cake with a dollop of whipped cream, extra peanut butter, or a sprinkle of chocolate chips. For a healthier twist, you could also add sliced bananas or a handful of nuts.
• No Egg? No Problem: If you don’t have eggs on hand, you can try a peanut butter mug cake with no egg by substituting the egg white with a tablespoon of unsweetened applesauce or mashed banana.

Exciting Variations and Serving Ideas

1. Chocolate Peanut Butter Mug Cake: Add 1 tablespoon of cocoa powder to the batter for a rich, chocolatey twist. You can also increase the chocolate chips to 2 tablespoons or top the finished cake with a drizzle of melted chocolate for extra indulgence.

2. Banana Peanut Butter Mug Cake: Mash up half a ripe banana and add it to the batter for a moist, naturally sweetened peanut butter mug cake. The banana pairs wonderfully with the peanut butter, creating a soft, comforting dessert with a fruity twist.

3. Peanut Butter and Jelly Mug Cake: For a fun, nostalgic variation, swirl in a spoonful of your favorite fruit jam (strawberry, grape, or raspberry works great) before microwaving. The result is a warm peanut butter and jelly-inspired dessert that’s both delicious and playful.

4. Cinnamon Peanut Butter Mug Cake: Add 1/2 teaspoon of ground cinnamon to the batter for a warm, spiced twist. Cinnamon enhances the peanut butter’s richness and adds a comforting aroma to the cake. You can even top it with a sprinkle of cinnamon sugar once it’s cooked.

5. Keto Peanut Butter Mug Cake: For a low-carb, keto-friendly version, swap the all-purpose flour for almond flour and use a sugar substitute like stevia or erythritol. The result is a nutty, rich cake that’s still just as satisfying but without the carbs.

6. Vegan Peanut Butter Mug Cake: To make this mug cake vegan, replace the egg white with a flax egg (1 tablespoon ground flax seeds + 3 tablespoons water) and use plant-based milk. You can also use vegan chocolate chips if desired. It’s a perfect plant-based treat!

Each of these variations is simple to make and will give your peanut butter mug cake a unique twist, so feel free to get creative and experiment with your favorite flavors!

Baking Tips:

• Since oven temperatures can vary, be sure to check the cake at around 12 minutes. If it looks set but slightly soft in the middle, it’s perfect!
• If you’re making multiple cakes, adjust the baking time accordingly depending on the number of ramekins or dishes you’re using.
• For a golden, slightly crisp edge, you can add a small pat of butter on top before baking.

Now you can enjoy your Peanut butter mug cake recipes, oven-baked to perfection!

Frequently Asked Questions

Conclusion

Peanut butter mug cake recipes are perfect if you’re looking for a quick and delicious treat without the hassle of baking an entire cake. With just a few basic ingredients from your pantry, you can whip up these easy mug cakes in no time. 

Whether you opt for a healthier three-ingredient version or one made without eggs, you’ll enjoy a tasty, quick, and decadent dessert. 

I promise you’ll want to make this three-ingredient peanut butter mug cake recipes time and time again! Its comforting and rich peanut butter flavor makes it an ideal treat any time of day. Don’t hesitate to experiment with different variations, like using almond flour for a gluten-free option or adding chocolate chips! 

Go ahead and indulge in a warm, luscious Peanut butter mug cake recipes, and feel free to share your thoughts with me!