This chocolate peanut butter mug cake recipe became a small rescue on a busy day. I wanted a quick warm treat, so I mixed the ingredients in a mug and watched the batter rise in the microwave.
The flavor felt rich, soft, and deeply comforting, almost like a mini cake made only for me. The main feature of this recipe is the hidden pocket of creamy peanut butter in the center that melts into the cake.
My step by step process felt effortless as I stirred the dry ingredients, added the liquids, dropped the peanut butter in the center, cooked chocolate peanut butter mug cake, and then enjoyed every bite.
About This Chocolate Peanut Butter Mug Cake
The taste of this chocolate peanut butter mug cake recipe leans rich and comforting, giving a deep cocoa flavor supported by a warm, creamy peanut butter center.
The texture stays soft and slightly fudgy, creating a smooth mouth feel that feels indulgent without being heavy. The chocolate chips melt into tiny pockets that add sweetness through the warm cake.
The balance between chocolate and peanut butter stays steady from the first spoonful to the last, delivering a cozy, dessert-like experience that feels homemade and deeply satisfying in just a few minutes.
How To Prepare Chocolate Peanut Butter Mug Cake?
Preparation Time: 5 minutes
Cooking Time: 2 minutes
Total Time: About 7 minutes
Course: Dessert
Difficulty: Easy
Cuisine: American
Yield: 1 mug cake
Kitchen Utensils Needed
- Microwave-safe mug
- Spoon or small whisk
- Measuring spoons
- Measuring cup
Ingredients
- ¼ cup all-purpose flour
- 2 tablespoons granulated sugar
- 2 tablespoons melted butter (cooled slightly)
- 2 tablespoons unsweetened cocoa powder
- 1 tablespoon creamy peanut butter
- 1 tablespoon mini chocolate chips
- ¼ teaspoon baking powder
- ¼ cup milk, room temperature
- ¼ teaspoon vanilla extract
Instructions
1. Start by putting the flour, sugar, cocoa powder, and baking powder into a mug that’s safe for the microwave. Give everything a good stir so the dry ingredients are well blended.
2. Pour in the milk, the melted butter, and the vanilla. Mix until you have a smooth, even batter with no dry patches.
3. Spoon the peanut butter into the middle of the batter. Leave it as a little dollop doesn’t stir it in so it melts into a soft, gooey center as it cooks.
4. Scatter the mini chocolate chips over the top. Microwave the mug for roughly a minute to a minute and a half, just until the cake puffs up and the surface looks set.
5. Let the mug sit for a minute so it cools slightly the center will be very hot. Eat it warm, and add extra chocolate chips or a bit more peanut butter if you want.
Notes: Microwave times vary; start with 60 seconds and add more time in short bursts if needed. Avoid overcooking or the cake may become dry. For a richer flavor, add a pinch of salt to the dry ingredients.
Nutrition Facts Of Chocolate Peanut Butter Mug Cake
| Nutrition | Amounts |
|---|---|
| Calories | 430 |
| Fat | 24g |
| Carbohydrates | 50g |
| Protein | 8g |
| Sugar | 30g |
| Fiber | 3g |
Why This Recipe Is A Must-Try?
This chocolate peanut butter mug cake is a must-try because it delivers rich chocolate flavor and creamy peanut butter comfort in just minutes.
The ingredients come together easily, the texture stays soft and warm, and the center creates a satisfying molten bite. It requires almost no effort, no special equipment, and only one mug to clean.
The quick cooking time makes it an ideal choice when a craving strikes or when a small, personal dessert feels just right. Each spoonful offers a cozy blend of sweetness and smoothness that feels instantly rewarding.
Why My Recipe Works
My chocolate peanut butter mug cake works because every ingredient supports the texture, flavor, and quick cooking method inside a mug. The flour and baking powder create lift, giving the cake a soft rise even in the microwave.
Sugar and cocoa bring balanced sweetness and deep chocolate taste. Melted butter and milk keep the batter moist so the cake stays tender instead of turning dry.
The peanut butter in the center melts into a creamy pocket that enriches each bite. Chocolate chips soften throughout the cake, adding bursts of warmth that make the final result feel satisfying and consistent every time.
Our Favorite Ways To Serve It Up
One favorite way to enjoy this chocolate peanut butter mug cake is straight from the mug with a spoon while still warm, letting the gooey peanut butter center shine.
Another option is topping it with a small scoop of vanilla ice cream, allowing the cold cream to melt slightly into the cake for extra richness.
Drizzling chocolate or caramel sauce over the top adds an indulgent touch, and sprinkling crushed nuts or extra chocolate chips provides texture and crunch.
A dollop of whipped cream or a few fresh berries can brighten the flavor and make each bite feel even more special.
Expert Tips
➢ Measure ingredients precisely to ensure the cake rises properly and stays soft, especially flour and cocoa powder.
➢ Use room-temperature milk and cooled melted butter to prevent the batter from curdling or separating.
➢ Do not over mix the batter; stir just until combined to keep the cake tender and light.
➢ Drop the peanut butter in the center instead of mixing it completely for a molten, gooey middle.
➢ Microwave in short bursts if needed, checking the cake to avoid overcooking and dryness.
➢ Let the mug cake rest for a minute after microwaving so the heat distributes evenly and the center sets slightly before eating.
How To Make With More Delicious
✔ Mix a pinch of instant espresso powder into the dry ingredients to intensify the chocolate flavor without adding coffee taste.
✔ Swirl extra peanut butter or Nutella into the batter before microwaving to create a gooey, molten center that feels decadent.
✔ Fold in a few chocolate chunks instead of mini chips for pockets of melted chocolate that give every bite a richer texture.
✔ Add a teaspoon of brown sugar or honey on top before microwaving to create a slightly caramelized, sweet crust.
✔ Top the finished mug cake with a sprinkle of sea salt, whipped cream, or crushed nuts to balance sweetness and add layers of flavor.
Best Variations
➤ Nutella Swirl Mug Cake – Replace the peanut butter with a tablespoon of Nutella for a creamy hazelnut-chocolate center that melts beautifully.
➤ Salted Caramel Chocolate Mug Cake – Add a teaspoon of caramel sauce in the middle and sprinkle a tiny pinch of sea salt on top for a sweet-salty twist.
➤ Mocha Mug Cake – Mix ½ teaspoon of instant coffee or espresso powder into the dry ingredients to give the chocolate a rich coffee flavor.
➤ Banana Chocolate Peanut Butter Mug Cake – Mash 2–3 tablespoons of ripe banana into the batter for natural sweetness and a soft, fruity texture.
➤ Mint Chocolate Mug Cake – Stir a drop of peppermint extract into the batter and add chocolate chips for a refreshing, chocolaty mint version.
Storage Instructions
This chocolate peanut butter mug cake is best enjoyed immediately while warm and soft. If leftovers remain, store them in an airtight container in the refrigerator for up to 2 days.
To reheat, microwave for 20–30 seconds until soft and slightly warm. Avoid storing at room temperature for long periods, as the chocolate peanut butter mug cake can dry out quickly.
Do not freeze, as the texture may become dense and lose its gooey center. Always cover the chocolate peanut butter mug cake to prevent it from absorbing other fridge odors and to maintain its moisture and flavor.
Frequently Asked Questions
What kind of mug should I use?
Use a microwave safe ceramic or glass mug with at least a 12‑ounce (≈ 350 ml) capacity so the batter has room to rise without overflowing.
Can I make this mug cake without eggs?
Yes many mug cake recipes skip eggs and rely on baking powder for lift, especially when you want simplicity and a softer texture.
How long should I microwave it?
Generally 60–90 seconds on high works well, but it depends on your microwave’s wattage. Start with 60 seconds, and then add 10–15 second bursts if needed until the cake looks set but still slightly moist on top.
Why did my mug cake turn out dry or rubbery?
That often happens if it’s overcooked. Microwaves continue to bake while cooling, so stopping when the surface looks just set (still a bit moist) helps avoid dryness.
Why are there lumps of flour in my cake?
Lumps usually mean the dry ingredients weren’t stirred thoroughly before microwaving. Scrape the mug’s sides and bottom when mixing to ensure a smooth batter.
Can I bake this cake in a regular oven instead of a microwave?
Yes. If you prefer not to use a microwave, you can bake a similar mixture in an oven (in a ramekin or small baking dish), though texture and timing will differ compared to microwave cooking.
Conclusion
This chocolate peanut butter mug cake recipe is a treat that everyone enjoys. Every time I make it, the warm, soft texture and melt peanut butter center bring a little moment of happiness.
The chocolate peanut butter mug cake works well for one serving, making it easy to enjoy whenever a quick dessert is needed. I love how fast it comes together using my simple method, and it never fails to satisfy my sweet cravings.
I hope you try this chocolate peanut butter mug cake and enjoy the same comforting experience that I do each time.
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Chocolate Peanut Butter Mug Cake
Equipment
- Microwave-safe mug
- Spoon or small whisk
- Measuring spoons
- Measuring cup
Ingredients
- ¼ cup all-purpose flour
- 2 tablespoons granulated sugar
- 2 tablespoons melted butter cooled slightly
- 2 tablespoons unsweetened cocoa powder
- 1 tablespoon creamy peanut butter
- 1 tablespoon mini chocolate chips
- ¼ teaspoon baking powder
- ¼ cup milk room temperature
- ¼ teaspoon vanilla extract
Instructions
- Start by putting the flour, sugar, cocoa powder, and baking powder into a mug that’s safe for the microwave. Give everything a good stir so the dry ingredients are well blended.
- Pour in the milk, the melted butter, and the vanilla. Mix until you have a smooth, even batter with no dry patches.
- Spoon the peanut butter into the middle of the batter. Leave it as a little dollop doesn’t stir it in so it melts into a soft, gooey center as it cooks.
- Scatter the mini chocolate chips over the top. Microwave the mug for roughly a minute to a minute and a half, just until the cake puffs up and the surface looks set.
- Let the mug sit for a minute so it cools slightly the center will be very hot. Eat it warm, and add extra chocolate chips or a bit more peanut butter if you want.
Notes
Nutrition Facts Of Chocolate Peanut Butter Mug Cake Recipe
Calories: 430 | Fat: 24g | Carbohydrates: 50g | Protein: 8g | Sugar: 30g | Fiber: 3gHi! I’m Sophia, your trusted cake guide with years of hands-on baking experience. I’m passionate about creating delicious and wholesome cakes that bring happiness to every occasion and home. Whether you’re a beginner or seasoned baker, I’m here to share tips, recipes, and inspiration to make your baking journey enjoyable and rewarding. From classic flavors to healthy twists, my goal is to help you discover the joy of baking and sharing beautiful cakes with family and friends.