Desserts
This Reese's mug cake recipe transforms a simple microwave and a handful of pantry staples into a decadent single-serving dessert in just 2 minutes.
The magic lies in combining classic mug cake simplicity with the irresistible peanut butter-chocolate flavor of Reese's, creating a rich, fudgy cake that melts in your mouth.
I perfected this recipe after years of testing microwave desserts—this one never fails to deliver that perfect balance of moist texture and gooey Reese's pieces throughout.
The beauty of this recipe is its foolproof nature—no mixing bowls, no measuring cups, and no waiting for an oven to preheat. You'll need just five basic ingredients (plus Reese's pieces) and a microwave-safe mug.
The cake rises slightly in the microwave, creating a tender crumb with pockets of melted chocolate and peanut butter that make every bite worth the wait. It's the ideal solution for satisfying a sudden sweet tooth without dirtying more than one dish.
What you'll end up with is a warm, fudgy cake topped with a glossy chocolate glaze and extra Reese's pieces, served straight from the mug. The contrast between the warm cake and cool whipped cream topping (if you choose to add it) makes this dessert even more satisfying.
This recipe is perfect for late-night cravings, game day treats, or when you need a quick dessert to impress without the effort.
Ready in under 2 minutes, this mug cake is also completely customizable—add chocolate chips, sprinkles, or a dollop of peanut butter for extra indulgence. The best part?
You can adjust the sweetness or richness by tweaking the sugar or Reese's pieces to your taste. Let's make this dessert that's as easy as it is delicious.
Ingredients for reese's mug cake
Five core ingredients plus Reese's magic—this mug cake is your new quick dessert hero.
| Ingredient | Amount | Notes |
|---|---|---|
| All-Purpose Flour 🌾 | ¼ cup | Sifted for light texture |
| Granulated Sugar 🍚 | ¼ cup | White or brown preferred |
| Unsalted Butter 🧈 | ¼ cup | Melted, full-fat version |
| Milk 🥛 | ¼ cup | Whole milk preferred |
| Vanilla Extract 🌿 | ½ tbsp | Pure, not imitation |
| Reese's Pieces 🍫 | ¼ cup | Original flavor preferred |
| Cocoa Powder 🍫 | ¼ tbsp | Natural, unsweetened |
| Baking Powder 🌶️ | ½ tsp | For proper rise |
| Salt 🧂 | ¼ tsp | Fine sea salt |
| Whipped Cream 🥛 | ¼ cup | Optional, for topping |
| Chocolate Syrup 🍯 | ¼ cup | Optional, for drizzling |
Reese's pieces are the star—grab the original flavor from the candy aisle, not the mini eggs. The butter? Full-fat only—this isn't the time for low-fat shortcuts. For flour, Bob's Red Mill or store-brand sifted works perfectly. Cocoa powder needs to be natural (not Dutch-processed) for that rich chocolate flavor. I always double-check the expiration on Reese's pieces—old candy makes the cake taste flat. Trader Joe's has the best price on Reese's bulk bags, but any store brand works.
No Reese's pieces? Chocolate chips plus peanut butter drizzle gets you close. Whole milk out? Evaporated milk or even water works in a pinch. Want extra fudginess? Add 1 tbsp extra cocoa powder. The whipped cream topping is optional but makes it feel extra special—use Cool Whip or homemade whipped cream. For the chocolate syrup, Hershey's or Godiva are my go-tos, but any good-quality syrup will do. Pro tip: if your mug is too small, use a 16-ounce ceramic mug for perfect rise.
This cake is best eaten straight from the microwave—warm and gooey. Store leftovers in the fridge for up to 2 days, but honestly, it's so fast to make you'll probably make a fresh one. For make-ahead fun, mix the dry ingredients in a jar and keep them in the pantry. The melted butter and milk can be prepped ahead too—just add the dry mix and Reese's when you're ready. Freeze the batter in a ziplock for up to 1 month—thaw and microwave when you're craving a quick treat.
Why You'll Love This Recipe
- Mug Magic Speed: I swear, this cake comes together faster than I can microwave popcorn. Just mix flour, sugar, melted butter, milk, and vanilla—no sifter, no bowl scraper, just stir until it’s smooth. That’s it. No one will believe it’s that easy.
- Peanut Butter Bliss: The moment that rich peanut butter flavor hits your taste buds? Pure joy. The cake’s got that classic Reese’s warmth, but the microwave makes it fluffy and gooey—like dessert hugged you. (Yes, even on a Tuesday night.)
- Craving-Crusher Flex: Need a last-minute treat? This is my secret weapon. Double the batter, split it into two mugs, and suddenly you’ve got dessert for two. Or save half for later—because honestly, who can resist seconds?
- Pantry Staple Hack: No fancy ingredients, just basics you already own. Butter, flour, sugar, milk—all stuff you’d buy anyway. And since it’s single-serving, no food waste. My wallet (and my sweet tooth) thank me every time.
Step-by-step instructions for Reese's mug cake recipe
This foolproof method delivers rich, fudgy mug cake perfection in record time—no mixing bowls required!
Melt Butter and Mix Dry Ingredients
Place the 0.25 cup unsalted butter in a microwave-safe mug. Microwave for 30 seconds until completely melted. The butter should be smooth and liquid—if it looks partially solid, microwave for another 10 seconds. While the butter melts, sift together the 0.25 cup all-purpose flour, 0.25 tbsp cocoa powder, 0.5 tsp baking powder, and 0.25 tsp salt in a small bowl. This ensures no lumps form when you combine everything later.
Here's the thing—sifting the dry ingredients prevents a dense, cakey texture. I always use a fine-mesh strainer for this step. Once sifted, set the dry mixture aside until the butter is ready. The melted butter should be warm but not hot to the touch—this helps create that perfect fudgy consistency we're after.
Combine Wet and Dry Ingredients
Pour the melted butter into the mug, then add the 0.25 cup granulated sugar and 0.5 tbsp vanilla extract. Stir vigorously with a fork for 10 seconds until the sugar dissolves completely. This step is crucial because undissolved sugar creates grainy pockets in your cake. Next, add the 0.25 cup milk and stir again until smooth. The mixture should be thin but well-combined—almost like a thick batter.
Now sprinkle the 0.25 cup Reese's Pieces evenly over the batter. Use your fork to gently fold them in just enough to distribute them throughout, but don't overmix. We want those peanut butter pockets to stay intact for maximum flavor in every bite. The batter should look marbled with peanut butter swirls—this is your visual cue that everything is properly incorporated.
Microwave to Golden Perfection
Place the mug in the microwave and cook on high power for 60 seconds. Don't peek yet—this is where the magic happens! After the first minute, the cake should be puffed slightly in the center with a golden-brown top. If it looks underdone, microwave for 10-15 more seconds until the edges pull away from the mug slightly. The top should be firm to the touch but still moist—this indicates perfect doneness.
Real talk: every microwave is different, so start with 60 seconds and adjust based on your results. You want the cake to be just set in the center but still warm and gooey inside. If it's too dry, it's overcooked. If it's still jiggly, it needs more time. The ideal texture is like a cross between a brownie and a cake—rich, moist, and slightly fudgy.
Top and Serve Immediately
Let the mug cake cool for 1 minute—just enough time to handle it safely. While it cools slightly, dollop the 0.25 cup whipped cream on top and drizzle with 0.25 cup chocolate syrup. I like to swirl the syrup gently with a knife for a marbled effect. The contrast of cool whipped cream and warm cake creates the ultimate texture experience. Serve immediately while the cake is still warm and gooey inside.
This is the moment that matters: the first bite should deliver warm, moist cake with pockets of melted Reese's Pieces in every forkful. The whipped cream adds a cool, creamy contrast that balances the richness. For an extra indulgent touch, sprinkle additional Reese's Pieces on top before serving. Enjoy your mug cake while it's warm—it's at its absolute best right out of the microwave!
Pro Tips For Making Reese'S Mug Cake
- Melt Butter Slowly: I learned this the hard way—dumping cold butter straight into the mug and microwaving it too fast just makes a greasy mess. Warm the butter in the mug first for 10 seconds, then stir until it’s fully melted and smooth before adding anything else. This keeps the cake from turning into a dense brick.
- Sift That Flour: Skipping the sift when measuring flour for mug cakes means you’re packing it too tightly, and that’s how you end up with a cake that’s more like a hockey puck. Use a fork to break up any lumps in the mug, then tap the mug firmly on the counter 3-4 times to settle the flour evenly.
- Don’t Overmix the Batter: Stirring this batter until it’s perfectly smooth is a fast track to a tough cake. Mix just until the flour disappears—about 10 seconds—and stop. Overworking it develops gluten, and that’s how you ruin the tender texture this recipe is all about.
- Microwave in 30-Second Bursts: After burning three batches, I finally figured out that mug cakes need patience. Start with 30 seconds, then check immediately—if it’s not set, add another 15-20 seconds. The second you see the top rise and pull away from the mug, it’s done. Waiting too long turns it into a sad, rubbery lump.
Essential equipment for this dish
Microwave-Safe Mug
You'll need a microwave-safe ceramic mug—I recommend a 12-ounce or 16-ounce size for optimal rise. Avoid glass mugs, which can crack under heat, and skip metal mugs entirely. I use stoneware mugs (like those from IKEA's 365+ line) because they distribute heat evenly.
If your mug has a glossy finish, test it first—some can cause uneven cooking. 🔥
Measuring Tools
Precision matters here! Use a liquid measuring cup for the milk, melted butter, and chocolate syrup—these ingredients need accurate measurements. For dry ingredients like flour, sugar, and cocoa powder, a dry measuring cup with a leveling tool ensures consistency.
I keep a small set of measuring spoons (like OXO's Good Grips) handy for the vanilla extract, baking powder, and salt. Pro tip: spoon flour into the measuring cup and level it off—don't scoop directly from the bag.
Mixing Utensils
A fork or small whisk is all you need for mixing—no fancy tools required! I prefer a stainless steel fork because it holds up better than plastic. For folding in the Reese's Pieces, a small rubber spatula (like Kitchy's silicone scraper) works best to avoid breaking the candy.
If you're adding whipped cream or chocolate syrup, a small offset spatula helps create those pretty swirls. Keep a paper towel nearby for quick cleanups—this batter can get messy!
Optional Toppings Tools
For the whipped cream and chocolate syrup, a small piping bag (or even a ziplock bag with a corner snipped off) makes drizzling easier. I also grab a small knife or offset spatula to swirl the syrup into marbled patterns.
If you're adding extra Reese's Pieces or sprinkles, a small scoop or spoon helps distribute them evenly. A mini whisk comes in handy for quickly whipping store-bought whipped cream if it's too thick. 💫
Microwave Essentials
Your microwave doesn't need to be fancy, but it should be clean and well-maintained. I always wipe the turntable before starting to avoid sticking. If your microwave has a turntable, make sure it spins freely—uneven cooking can ruin the cake.
For even heat distribution, place the mug centered on the turntable. Avoid microwaves with hot spots—if your cake browns unevenly, try rotating the mug halfway through cooking. A microwave-safe plate underneath catches any drips, making cleanup a breeze.
Nutrition facts
Frequently asked questions
Can I make this Reese's mug cake without Reese's Pieces?
Swap the Reese's Pieces for 0.25 cup chocolate chips and add 1 tablespoon peanut butter to the batter for a similar flavor. For extra richness, drizzle melted peanut butter over the finished cake. The texture will be slightly different but still delicious.
Why did my mug cake come out dry or crumbly?
Overcooking is the most common cause—microwaves vary, so start with 60 seconds and check for doneness. If your cake is dry, try reducing the microwave time by 10 seconds next time. Also, ensure your butter is fully melted (not greasy) and your milk is cold for a moist texture.
How can I make this recipe gluten-free?
Replace the 0.25 cup all-purpose flour with 0.25 cup gluten-free 1:1 baking flour (like Bob's Red Mill). Add 0.5 teaspoon xanthan gum to help bind the cake. The texture will be slightly denser but still delicious. Test your gluten-free flour blend first to ensure proper rise.
Can I make this mug cake ahead of time?
Not recommended for best results—this cake is best served warm and gooey. However, you can pre-mix the dry ingredients in a jar and store them for up to 2 weeks. For the wet ingredients, melt the butter and mix with milk, then refrigerate for up to 3 days. Assemble and microwave when ready to eat.
What's the best mug size for this recipe?
Use a 12-ounce or 16-ounce ceramic mug—smaller mugs (8-ounce) may not give the cake room to rise properly, while larger mugs (> 20-ounce) can make the cake spread too thin. Stoneware mugs distribute heat evenly for perfect results. Avoid glass or metal mugs, as they can cause uneven cooking.