A S’more Mug Cake is the fastest way to bring campfire joy into your kitchen rich chocolate, gooey marshmallows, and golden cookie crumbs all baked together in one cozy mug. Every time I make this S more Mug Cake, I’m transported back to those summer nights when we roasted marshmallows and laughed under the stars. Now, when Oregon’s skies turn gray, this S mores Mug Cake is my comfort cure warm, sweet, and ready in just a few minutes.
I love how a S more Mug Cake captures the essence of s’mores without the campfire smoke. With simple pantry ingredients and a microwave, this quick S more Mug Cake delivers melty chocolate happiness right to your spoon. If you crave indulgence without the wait, this S mores Mug Cake is pure dessert therapy cozy, chocolatey, and utterly irresistible.
For another chocolate classic, try my Molten Chocolate Lava Mug Cake.
Table of Contents
Table of Contents
How to Make a S more Mug Cake in Minutes
A warm, gooey S’more Mug Cake made with chocolate, marshmallows, and cookie crumbs — ready in just 7 minutes for the perfect cozy dessert.
- Total Time: 7 minutes
- Yield: 1 serving
Ingredients
3 tbsp all-purpose flour
3 tbsp brown sugar
3 tbsp cocoa powder
3 tbsp oil (canola, coconut, or sunflower)
3 tbsp water
Pinch of salt
½ tsp vanilla extract
2 tbsp cookie crumbs (graham or digestive)
3 marshmallows
Instructions
1. In a microwave-safe mug, mix flour, brown sugar, cocoa powder, and salt.
2. Add oil, water, and vanilla; stir until smooth and glossy.
3. Fold in cookie crumbs for extra crunch.
4. Microwave on high for 45–60 seconds (depending on microwave wattage).
5. Top with marshmallows and microwave 20 seconds more until puffy.
6. Cool for 1–2 minutes, then enjoy warm with ice cream or whipped cream.
Notes
Microwave times may vary — start with less time and add as needed.
Use a wide 6–8 oz mug to avoid overflow.
For a richer flavor, stir in chocolate chips before cooking.
To make it dairy-free, use vegan marshmallows and plant-based oil.
- Prep Time: 5 minutes
- Cook Time: 2 minutes
- Category: Chocolate Mug Cakes
- Method: Microwave
- Cuisine: American
- Diet: Vegetarian
Ingredients & Step-by-Step Recipe
Every time I make a S more Mug Cake, the aroma fills my kitchen with cozy nostalgia. This simple S more Mug Cake recipe captures the gooey sweetness of campfire s’mores no flames, just a microwave and a mug. I created this S’mores Mug Cake one rainy night in Oregon when I craved something sweet but didn’t want to turn on the oven. The result? A perfectly soft, chocolate-rich dessert layered with melted marshmallows and buttery crumbs.
Ingredients for the Perfect S’more Mug Cake
To make this S more Mug Cake, you only need a few pantry staples. Each ingredient adds something special to the gooey, rich texture that makes this dessert unforgettable.
- 3 tablespoons all-purpose flour
- 3 tablespoons brown sugar
- 3 tablespoons cocoa powder
- 3 tablespoons oil (canola, coconut, or sunflower)
- 3 tablespoons water
- Pinch of salt
- ½ teaspoon vanilla extract
- 2 tablespoons cookie crumbs (graham or digestive)
- 3 marshmallows
These simple ingredients transform into a S mores Mug Cake that’s warm, soft, and full of chocolate flavor in just seven minutes.
Step-by-Step Instructions for a Gooey S more Mug Cake
Step 1: Mix the Dry Ingredients
In a microwave-safe mug, combine flour, brown sugar, cocoa powder, and salt. Mix well to build the chocolate base of your S’more Mug Cake.
Step 2: Add the Wet Ingredients
Pour in the oil, water, and vanilla extract. Stir until smooth and glossy. Your S more Mug Cake batter should look thick like brownie mix.
Step 3: Add the Cookie Crumbs
Stir in cookie crumbs for that signature graham flavor that defines a true S mores Mug Cake.
Step 4: Microwave the Cake
Microwave on high for 45–60 seconds (based on a 1200W microwave). The center should stay slightly gooey — that’s the secret to a perfect S’more Mug Cake texture.
Step 5: Add Marshmallows
Place the marshmallows on top and microwave for 20 seconds more. Watch them puff up into a soft, melty topping that completes your S more Mug Cake masterpiece.
Step 6: Serve and Enjoy
Enjoy your S’mores Mug Cake warm, straight from the mug, or top it with a scoop of vanilla ice cream for a creamy contrast.
Serving, Toppings & Storage Tips
The best part of making a S’more Mug Cake besides eating it is serving it with creativity. When your S more Mug Cake comes out of the microwave, the top is perfectly puffed with melted marshmallows, the sides are rich with chocolate, and the center stays gooey. It’s dessert magic in minutes. The beauty of this S mores Mug Cake is that you can dress it up or enjoy it as-is either way, it feels like a tiny indulgent celebration in a cup.
How to Serve the Perfect S’more Mug Cake
The S’more Mug Cake is best enjoyed warm, right after microwaving. The melted marshmallows act like frosting, while the cookie crumbs give it that irresistible crunch. For an extra cozy touch, I love topping my S’mores Mug Cake with a small scoop of vanilla ice cream. The cold ice cream melting into the warm S more Mug Cake creates a creamy contrast that’s absolutely divine.
If you prefer something lighter, drizzle a bit of honey or maple syrup over your S more Mug Cake it adds sweetness without overpowering the chocolate. You can even add a spoonful of whipped cream, crushed graham crackers, or a few chocolate chips on top.
I sometimes pair this S more Mug Cake with my Vanilla Bean Mug Cake for a flavor balance that feels like a dessert duet the vanilla’s warmth complements the chocolate perfectly. Together, they turn any rainy evening into a sweet, comforting ritual.
Creative Topping Ideas for Your S’more Mug Cake
You can personalize your S more Mug Cake to match your cravings or the season. Here are a few of my favorite topping ideas:
| Topping Idea | Flavor Effect |
|---|---|
| Whipped cream & mini marshmallows | Light, fluffy sweetness |
| Crushed cookies or graham crackers | Crunchy contrast |
| Peanut butter drizzle | Nutty richness |
| Chocolate sauce | Intense cocoa finish |
| Caramel swirl | Sweet-salty perfection |
| Chopped nuts | Adds texture and crunch |
| Berries | Fresh burst of flavor |
Adding any of these will elevate your S mores Mug Cake without much effort. The key is balance let the gooey marshmallow and soft cake shine through.
Serving Tips for the Ultimate S more Mug Cake Experience
Here’s what I’ve learned after making this S’more Mug Cake dozens of times:
- Use a wide mug — A 6–8 oz mug helps the S more Mug Cake rise evenly without overflowing.
- Cool slightly before eating — Give it 1–2 minutes; the center stays warm but won’t burn your tongue.
- Add toppings fast — The heat from your S mores Mug Cake melts ice cream and chocolate just right.
- Enjoy it fresh — The magic of a S more Mug Cake is its soft, just-baked texture.
This is one dessert that’s meant to be savored slowly. A S more Mug Cake eaten warm with a spoon feels like a hug comforting, rich, and perfectly portioned for one.
How to Store and Reheat Your S’more Mug Cake
Though a S’more Mug Cake is best fresh, you can save leftovers for later (if you somehow don’t eat it all!). Here’s how to store and reheat it properly:
- Storage: Let your S mores Mug Cake cool completely. Cover the mug tightly with plastic wrap or transfer it to an airtight container. Refrigerate for up to 1 day.
- Reheating: Microwave the S more Mug Cake for 10–15 seconds until warm. Avoid over-microwaving — it can dry out the edges and make marshmallows tough.
- Revive the gooey texture: Add a splash of milk before reheating your S more Mug Cake. It restores the moisture and makes the chocolate center fudgy again.
If you love cozy chocolate comfort, try my Easy Chocolate Mug Cake in Microwave next. It’s another quick treat that pairs perfectly with your S more Mug Cake for a double dose of chocolatey joy.
Tools for Baking
You don’t need a professional kitchen to make a S more Mug Cake.
Here’s a quick tab-style guide to everything you need for the perfect mug dessert simple tools, powerful results, and just enough charm to make your S more Mug Cake feel special.
🟤 Tool 1: Microwave-Safe Mug (6–8 oz)
Purpose:
Lets your S more Mug Cake rise evenly while staying soft and gooey in the center.
Pro Tip:
Choose a wide mug the marshmallows in your S more Mug Cake will puff beautifully without spilling over.
🟤 Tool 2: Small Whisk or Fork
Purpose:
Creates a smooth, lump-free batter that helps your S mores Mug Cake cook evenly.
Pro Tip:
Whisk dry ingredients first, then add liquids. A shiny, thick texture means your S more Mug Cake will bake perfectly.
🟤 Tool 3: Measuring Spoons
Purpose:
Balances your cocoa and sugar so your S more Mug Cake tastes rich, not bitter.
Pro Tip:
Always level off each spoon. A little too much cocoa can overpower your S more Mug Cake’s sweetness.
🟤 Tool 4: Silicone Spatula
Purpose:
Helps scoop every gooey bite of your S mores Mug Cake from the sides of the mug.
Pro Tip:
Run the spatula around the rim right after microwaving. It keeps your S more Mug Cake edges soft and clean.
🟤 Tool 5: Microwave (1000–1200W)
Purpose:
Bakes your S more Mug Cake to perfection in under a minute.
Pro Tip:
Start at 45 seconds; if you like a firmer texture, add 10 seconds. The center should stay slightly soft for the best S’mores Mug Cake texture.
Optional Add-Ons
- Mini torch: Toast marshmallows for a real campfire finish.
- Kitchen scale: Keep measurements consistent if you double your S more Mug Cake recipe.
- Cooling rack: Prevents overbaking and keeps your cake moist.
For more tips on microwave baking, check out my Cake in Mug Chocolate Recipe it pairs perfectly with this S’more Mug Cake for chocolate lovers.
Common Mistakes & How to Fix Them
I’ve made hundreds of S’more Mug Cake batches, and I’ll be honest my first few were far from perfect. Sometimes the marshmallows overflowed, sometimes the center turned dry, and other times my S more Mug Cake just didn’t rise. But those small mistakes taught me how to master the gooey, chocolatey balance that makes a great S’mores Mug Cake.
Below are the most common S’more Mug Cake issues and how to fix them so your next mug dessert turns out soft, rich, and full of that campfire charm.
⚠️ Mistake 1: The S’more Mug Cake Overflows
Why it happens: The mug is too small or the batter is too full. As your S more Mug Cake, it rises quickly and can spill over the sides.
How to fix it:
Use a larger mug (at least 6–8 ounces) and fill it only halfway. If you want to make two servings, divide your S’mores Mug Cake batter into separate mugs instead of doubling it in one.
Next time, microwave in 10-second bursts near the end it helps your S’more Mug Cake rise gently without spilling.
⚠️ Mistake 2: The Center Is Dry or Rubbery
Why it happens: Overcooking is the number one S more Mug Cake problem. Microwaves heat fast, so even 10 extra seconds can turn gooey into gummy.
How to fix it:
Cook your S more Mug Cake for 45 seconds first. If the center still looks a little soft, that’s perfect it will finish cooking from residual heat.
For future batches, try adding an extra teaspoon of oil or water. It keeps your S mores Mug Cake moist and silky.
⚠️ Mistake 3: The Marshmallows Melt Too Fast
Why it happens: You’re adding marshmallows too early or microwaving the topping too long.
How to fix it:
Bake the base of your S’more Mug Cake first, then add marshmallows in the last 20 seconds.
If you want that golden top, let them sit for a minute before eating or toast them with a mini torch. The result is a fluffy, picture-perfect S’mores Mug Cake topping.
Frequently Asked Questions about S’more Mug Cake
Can I make a S’more Mug Cake with no egg?
Yes, absolutely! The best part about this S’more Mug Cake is that it doesn’t need eggs to be rich and moist. The combination of oil, water, and cocoa gives it a soft, fudgy texture. If you prefer, you can replace some of the oil with milk or a spoonful of Greek yogurt for extra creaminess.
This no-egg S more Mug Cake is safe to eat, cooks evenly, and keeps that classic gooey center you love from traditional s’mores desserts.
What makes this S’more Mug Cake recipe special?
This S’mores Mug Cake recipe blends the nostalgic flavor of campfire s’mores with the convenience of microwave baking. Unlike other mug cakes, this one combines melted marshmallows, chocolate, and cookie crumbs in one mug for the full s’mores experience.
It’s quick (ready in under seven minutes), uses simple ingredients, and delivers bakery-level flavor right at home. Every bite of your S more Mug Cake is warm, soft, and loaded with chocolate goodness.
How can I make my S’more Mug Cake extra chocolatey?
To make a deeply rich S’more Mug Cake, use dark cocoa powder or stir in a teaspoon of melted chocolate before microwaving. For an ultra-decadent texture, add chocolate chips to the center of your S more Mug Cake before cooking they’ll melt into a fudgy pool of chocolate.
If you love layering flavor, top your S’mores Mug Cake with chocolate sauce or a drizzle of Nutella right after it finishes baking.
Is there a healthy version of the S’more Mug Cake?
Yes! You can enjoy a healthy S’more Mug Cake by making a few simple swaps. Replace oil with unsweetened applesauce or mashed banana, and use whole wheat flour instead of white flour. Coconut sugar or honey are great natural sweeteners.
This version keeps your S more Mug Cake moist and flavorful while cutting back on refined sugar and fat. It’s perfect for when you want a guilt-free dessert that still feels indulgent.
Can I make a vanilla marshmallow mug cake instead of chocolate?
Definitely! If you prefer a lighter flavor, try a vanilla marshmallow mug cake. Simply skip the cocoa powder and add a bit more vanilla extract. The melted marshmallows still give that sweet, gooey topping that makes the S’more Mug Cake so comforting.
You can even mix in white chocolate chips for a creamy twist or sprinkle cinnamon for a cozy vanilla spice touch.
Conclusion
Every time I make a S’more Mug Cake, I’m reminded that the simplest desserts often hold the most joy. This single-serve treat brings all the warmth of a campfire night the melted marshmallow, the deep chocolate, the crunchy sweetness of cookie crumbs right to your kitchen in minutes.
When the Oregon rain taps against my window, this S more Mug Cake feels like a cozy hug in dessert form. It’s sweet, rich, and just enough to lift your mood without needing an oven or hours of baking. That’s the heart of a S’mores Mug Cake comfort made simple.
I love how this little dessert turns ordinary moments into something special. Whether you’re sharing it with family or treating yourself after a long day, the S’more Mug Cake always delivers warmth, sweetness, and a touch of nostalgia.
If you enjoy festive flavors too, you’ll love my hot chocolate cake in a mug. It’s the perfect holiday companion to this S’mores Mug Cake rich, minty, and just as easy to make.
In every mug, we find a bit of comfort and that’s what I hope this S more Mug Cake brings to you. Dessert isn’t just food; it’s love you can taste.
Discover more cozy dessert recipes in minutes, comfort and sweetness await in every mug.
👉Save your next craving on Pinterest boards and discover more no-bake dessert recipes you can make in just minutes.
👉Join me on Facebook page and discover more quick dessert recipes made with love, your next 5-minute chocolate moment is waiting!
👉Find me on Instagram to explore more 5-minute no-bake dessert ideas, simple, sweet, and made to warm your day.