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Craving a sweet treat that’s quick and easy? You’ll love this Chocolate Peanut Butter Mug Cake! In just a few minutes, you can enjoy a warm, gooey dessert that’s rich in flavor. This simple recipe requires minimal ingredients and packs a punch with every bite. Whether you’re in a rush or have a sweet tooth, this cake is perfect. Let’s dive into the ingredients and get baking!
Why I Love This Recipe
- Quick and Easy: This mug cake can be whipped up in just a few minutes, making it a perfect treat for when you’re short on time.
- Decadent Flavor: The combination of rich chocolate and creamy peanut butter creates a satisfying dessert that hits all the right notes.
- Single Serving: No need to bake an entire cake; this recipe gives you just one serving, which is great for portion control.
- Customizable: You can easily add your favorite mix-ins or toppings, like chocolate chips or whipped cream, to make it your own.
Ingredients
Ingredient List
– 4 tablespoons all-purpose flour
– 4 tablespoons granulated sugar
– 2 tablespoons unsweetened cocoa powder
– 1/8 teaspoon baking powder
– 1/8 teaspoon salt
– 3 tablespoons milk (or a non-dairy alternative)
– 2 tablespoons peanut butter
– 1 tablespoon vegetable oil
– 1/2 teaspoon vanilla extract
– Optional: chocolate chips for extra richness
Optional Ingredients for Extra Flavor
You can add chocolate chips for a richer taste. They melt nicely in the mug cake. You might also enjoy a pinch of cinnamon for warmth. A dash of espresso powder can enhance the chocolate flavor too.
Suggested Substitutions
If you don’t have all-purpose flour, try oat flour or almond flour. For sugar, use brown sugar or coconut sugar for a deeper flavor. If you need a dairy-free option, almond milk or oat milk works well. You can swap peanut butter with almond butter or sunflower seed butter for a different twist.

Step-by-Step Instructions
Preparation Steps for the Mug Cake
To make this mug cake, start by gathering your ingredients. You will need:
– 4 tablespoons all-purpose flour
– 4 tablespoons granulated sugar
– 2 tablespoons unsweetened cocoa powder
– 1/8 teaspoon baking powder
– 1/8 teaspoon salt
– 3 tablespoons milk (or a non-dairy alternative)
– 2 tablespoons peanut butter
– 1 tablespoon vegetable oil
– 1/2 teaspoon vanilla extract
– Optional: chocolate chips for extra richness
First, take a microwave-safe mug. In the mug, mix the flour, sugar, cocoa powder, baking powder, and salt. Make sure to stir well. This step is key to avoid lumps.
Next, add the milk, peanut butter, vegetable oil, and vanilla extract. Whisk these ingredients together until you have a smooth batter. It should be thick and creamy. If you want, toss in some chocolate chips for a richer taste.
Microwave Cooking Instructions
Now it’s time to cook! Place the mug in the microwave. Set the timer for 1 minute and 10 seconds. Every microwave is different, so watch it closely. You don’t want it to overflow.
Once the time is up, carefully take the mug out. It will be hot, so use a towel if needed. Let it cool for about a minute.
Tips for Checking Doneness
To check if your mug cake is done, look for a few signs. The cake should be puffed up and firm to the touch. If it jiggles too much, it may need more time. You can also use a toothpick. Insert it in the center; if it comes out clean, your cake is ready.
Remember, it’s better to slightly undercook than overcook. The mug cake will continue to cook a bit after you take it out. Enjoy your delicious treat!
Tips & Tricks
How to Make the Perfect Mug Cake
To make the best chocolate peanut butter mug cake, start with the right mug. Use a large, microwave-safe mug. This way, your cake has room to rise. Mix your dry ingredients first. Combine flour, sugar, cocoa powder, baking powder, and salt well. This helps avoid lumps. Next, add wet ingredients. Stir in milk, peanut butter, oil, and vanilla until the batter is smooth. For extra flavor, toss in a few chocolate chips. Just remember not to over-mix. This keeps your cake fluffy and light.
Common Mistakes to Avoid
One mistake is using a small mug. A small mug can cause the cake to overflow. Also, watch the cooking time closely. Every microwave is different. If you cook it too long, your cake can dry out. Avoid using cold ingredients. Room temperature items mix better and cook evenly. Lastly, don’t skip the cooling step. Let it sit for a minute before enjoying. This helps the cake set and makes it easier to eat.
Serving Suggestions for Enjoyment
Serving is part of the fun! Keep it simple by serving in the mug. For a nice touch, add a dollop of peanut butter on top. You can also add whipped cream or extra chocolate chips. If you’re feeling fancy, sprinkle cocoa powder or crushed peanuts on top. This adds a nice crunch and looks great. You can serve it warm or at room temperature, but I love it warm! Enjoy your treat with a scoop of ice cream on the side for a special twist.
Pro Tips
- Use Room Temperature Ingredients: Make sure your peanut butter and milk are at room temperature for a more homogenous batter that mixes easily.
- Watch the Cooking Time: Every microwave is different; start with 1 minute, and check for doneness to prevent overcooking.
- Customize Your Toppings: Feel free to get creative! Add sliced bananas, a drizzle of honey, or even a scoop of ice cream for a decadent treat.
- Mind the Mug Size: Choose a large mug to give your cake room to rise without spilling over during cooking.

Variations
Chocolate Peanut Butter Mug Cake with Nuts
You can add nuts to your mug cake for extra crunch. Walnuts or pecans work great. Just chop them up and mix them in with the other wet ingredients. You can add about 2 tablespoons of your favorite nuts. This adds a nice texture and flavor to your cake.
Vegan Chocolate Peanut Butter Mug Cake
Want a vegan option? You can easily make this mug cake without dairy. Substitute milk with almond milk or oat milk. Use a plant-based butter instead of peanut butter, or try a nut-free spread. Your mug cake will still taste amazing and be friendly for everyone.
Low-Sugar Mug Cake Option
If you want to cut down on sugar, you can use a sugar substitute. Try stevia or erythritol instead of granulated sugar. Use the same amount as the recipe calls for. Your cake will still be sweet without all the extra sugar. This way, you enjoy a treat without the guilt.
Storage Info
How to Store Leftovers
If you have any leftover chocolate peanut butter mug cake, store it in a sealed container. Place it in the fridge. It can stay fresh for up to two days. Cover it tightly to keep it moist. If you don’t have a container, wrap the mug with plastic wrap. This will keep it nice and safe.
Reheating Instructions
When you want to eat your leftover cake, simply microwave it. Heat it for about 10 to 15 seconds. Check if it’s warm enough. If not, heat for another 10 seconds. Be careful! The mug can get hot. You want your cake warm but not dry.
Freezing Options
You can freeze the mug cake, but it’s best to eat it fresh. If you want to freeze it, let it cool completely first. Wrap it in plastic wrap, then put it in a freezer-safe bag. It can last up to a month. When you’re ready to eat it, thaw it in the fridge overnight. Then reheat it in the microwave. Enjoy your sweet treat whenever you like!
FAQs
How do I know when the mug cake is done?
You can tell the mug cake is done when it rises and looks firm. A toothpick inserted in the center should come out clean. If it still has batter on it, microwave for an extra 10 seconds. Watch closely to avoid overcooking. Overcooked cake may become dry.
Can I make this recipe in advance?
Yes, you can prepare the dry ingredients in advance. Store them in a sealed container. When you’re ready, add the wet ingredients and mix. However, I recommend cooking it right before eating for the best taste and texture.
What can I use instead of peanut butter?
You can use almond butter or sunflower seed butter as a swap. Both options give a nice flavor. If you want a nut-free version, try using applesauce. It will change the taste, but it still works well in the cake.
In this blog post, we covered how to make a simple and tasty mug cake. I shared the key ingredients and optional items for added flavor. You learned about preparation and cooking steps, plus tips for perfect results. We also explored fun variations, from vegan to low-sugar options. Lastly, I provided storage tips to keep your mug cake fresh. Remember, with just a few easy steps, you can enjoy a delicious treat anytime! Try it out and discover your favorite flavor twis
Chocolate Peanut Butter Mug Cake
A quick and easy mug cake that combines chocolate and peanut butter for a delicious dessert.
Prep Time 5 minutes mins
Cook Time 1 minute min
Total Time 6 minutes mins
Course Dessert
Cuisine American
Servings 1
Calories 350 kcal
- 4 tablespoons all-purpose flour
- 4 tablespoons granulated sugar
- 2 tablespoons unsweetened cocoa powder
- 1 8 teaspoon baking powder
- 1 8 teaspoon salt
- 3 tablespoons milk (or a non-dairy alternative)
- 2 tablespoons peanut butter
- 1 tablespoon vegetable oil
- 1 2 teaspoon vanilla extract
- optional chocolate chips
In a microwave-safe mug, combine the all-purpose flour, granulated sugar, cocoa powder, baking powder, and salt. Stir well to combine the dry ingredients.
Add milk, peanut butter, vegetable oil, and vanilla extract into the mug. Whisk together until you have a smooth batter, ensuring there are no lumps of flour.
If desired, sprinkle a few chocolate chips into the batter and stir gently to mix them in.
Microwave the mug on high for about 1 minute and 10 seconds. Cooking times may vary based on your microwave, so keep an eye on it to avoid overflowing.
Once cooked, carefully remove the mug from the microwave (it will be hot!). Let it cool for a minute before enjoying.
For added indulgence, you can top your mug cake with a dollop of peanut butter, whipped cream, or extra chocolate chips.
Serve directly in the mug or transfer to a plate. Garnish with cocoa powder or crushed peanuts.
Keyword chocolate, mug cake, peanut butter, quick dessert
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