Decadent Chocolate Lava Mug Cake Recipe
Get ready to meet your new go-to dessert: the Decadent Chocolate Lava Mug Cake. This treat is pure chocolatey magic in a mug, serving up gooey, molten lava bliss in minutes. Whether you’re hunting for a solo indulgence after dinner or need a speedy sweet fix, this mug cake will hit every craving. The combination of rich cocoa, melty chocolate chips, and a molten Nutella center makes it feel fancy, yet it’s so easy to whip up with ingredients you likely already have. If comforting chocolate desserts call your name, you’re absolutely going to fall for this Decadent Chocolate Lava Mug Cake.

Ingredients You’ll Need
You won’t believe how such a simple list of ingredients can yield so much joy, but each plays an essential role here! From the plush crumb to the gooey lava, every ingredient helps deliver the ultimate mug cake experience. Make sure to gather these before you start so you can create chocolatey magic in minutes.
- Flour: All-purpose flour provides the structure to keep your mug cake fluffy and tender.
- Cocoa powder: This gives that deep chocolate flavor and gorgeous color—use a good quality cocoa for the richest taste.
- Sugar: Sweetens the cake just right; adjust a tad up or down for your perfect level.
- Baking powder: The secret to that beautiful puff, making sure it rises and stays light, not dense.
- Salt: Just a pinch, but it really brings out the chocolate notes and balances sweetness.
- Milk: Adds much-needed moisture, making the cake perfectly soft and not dry.
- Vegetable oil (or melted butter): Keeps everything tender and gives a luscious mouthfeel; butter will add extra richness.
- Chocolate chips: Stirred in and sprinkled on top, they give little pockets of melty chocolate in every bite.
- Chopped walnuts (optional): For crunch and toasty, nutty flavor; they’re optional but add great texture.
- Nutella or chocolate spread: This is your “lava”—drop it in the center for that dreamy, molten core.
- Extra toppings (optional): More chocolate chips, walnuts, or a swirl of caramel drizzle make each mug cake extra special.
How to Make Decadent Chocolate Lava Mug Cake
Step 1: Mix the Dry Ingredients
Start by grabbing a large, microwave-safe mug (preferably 12–14 ounces to prevent overflow). Into your mug, whisk together the flour, cocoa powder, sugar, baking powder, and salt. This step is crucial for a consistent texture since it ensures there are no clumps of cocoa or flour hiding in your cake. Give everything a nice, thorough stir with a small whisk or fork.
Step 2: Stir in the Wet Ingredients
Next, pour in the milk and your choice of vegetable oil or melted butter right into your mug. Mix everything until you get a smooth batter, scraping the sides and bottom so all the dry bits are well incorporated. Don’t overmix; just combine until smooth. The batter will look deeply chocolatey and should already smell like a dream.
Step 3: Add Chocolate Chips and Walnuts
Time for mix-ins! Sprinkle in your chocolate chips and, if you’re a fan of texture, some chopped walnuts. Fold them gently into the batter so every bite will have a delightful blend of gooey chocolate and crunch (totally optional, but highly recommended if you have them on hand).
Step 4: Create the Lava Center
Now for the best part: the molten core! Drop a generous tablespoon of Nutella or your favorite chocolate spread right into the center of the batter. Gently press it down with your spoon so it sits comfortably in the middle without touching the very bottom. This is where the “lava” magic really happens.
Step 5: Microwave to Perfection
Pop your mug into the microwave and heat it for 1 to 1½ minutes (depending on your microwave’s wattage). You want the top to just set while the middle remains irresistibly soft. Keep in mind that mug cakes cook fast, so err on the side of undercooked for ultimate gooeyness. Let it cool for a minute before diving in.
Step 6: Add Your Favorite Toppings
Finish off your Decadent Chocolate Lava Mug Cake with extra chocolate chips or walnuts on top—these melt slightly from the cake’s warmth. For next-level goodness, a quick drizzle of caramel or even a sprinkle of flaky salt adds an elegant touch. Dig in while it’s warm for that glorious molten center!
How to Serve Decadent Chocolate Lava Mug Cake

Garnishes
To make your mug cake look bakery-perfect, sprinkle a handful of extra chocolate chips and chopped walnuts right over the top as soon as it comes out of the microwave. They’ll gently melt and add an inviting sheen. For a touch of glam, a drizzle of caramel sauce or even a dusting of powdered sugar makes it absolutely irresistible. Feeling bold? Try a scoop of vanilla ice cream—trust me, you won’t regret it.
Side Dishes
Since the Decadent Chocolate Lava Mug Cake packs so much chocolate power, keep side dishes simple. A hot mug of coffee, tea, or creamy hot cocoa alongside this dessert is a match made in heaven. Or serve it with some fresh berries—their tartness cuts through the richness and adds a burst of color to your treat.
Creative Ways to Present
Turn your mug cake into a dinner party showstopper by splitting the cake into two small espresso cups and topping with different garnishes—think toasted coconut or raspberry sauce. Or, serve it in a fancy glass or mini trifle dish layered with whipped cream and chopped fruit for a fun twist. This recipe is all about easy elegance!
Make Ahead and Storage
Storing Leftovers
If you somehow manage to save a morsel for later (good luck!), let your mug cake cool completely and cover the mug with plastic wrap or transfer the cake to an airtight container. It’ll stay moist and fudgy at room temperature for up to a day, though honestly, it’s at its very best fresh and warm.
Freezing
While the Decadent Chocolate Lava Mug Cake is really meant for instant gratification, you can freeze leftovers if needed. Gently remove the cake from the mug, wrap tightly in plastic, and freeze up to two weeks. Thaw overnight in the fridge before reheating to preserve the gooey center and delicate crumb.
Reheating
To bring your mug cake back to its soft, molten glory, microwave it in short bursts (about 10–15 seconds at a time) until just warmed through. Be careful not to overheat, or you’ll lose that dreamy lava center. If you froze your cake, let it thaw before reheating, and cover loosely to keep it from drying out.
FAQs
Can I make this mug cake dairy-free?
Absolutely! Swap the milk for any plant-based option like almond or oat milk and use a dairy-free chocolate spread for the lava center. Also, double-check your chocolate chips to ensure they’re dairy-free. You still get all the fudgy magic of the classic Decadent Chocolate Lava Mug Cake.
What if I don’t have Nutella or chocolate spread?
No worries—you can use peanut butter for a nutty twist, or just toss in extra chocolate chips for added meltiness. The result will still satisfy a lava cake craving and deliver that ooey-gooey center.
Can I bake this in the oven instead of the microwave?
Yes, you can! Pour the batter into an oven-safe ramekin and bake at 350°F (175°C) for about 12–15 minutes. Keep an eye on it—the middle should remain soft for that signature lava effect. The Decadent Chocolate Lava Mug Cake works beautifully in both microwave and oven.
How do I know when the mug cake is done?
The top should look set but still feel soft to the touch, and the center should be gooey. If you notice the sides pulling away from the mug but the center is shiny, that’s the perfect sweet spot for a rich, molten bite.
What size mug should I use?
For best results, use a large (12–14 ounce) microwave-safe mug to give the cake plenty of space to rise without overflowing. If your mug is smaller, place a plate underneath just in case—no one enjoys a microwave mess!
Final Thoughts
There’s really nothing like the instant comfort of a Decadent Chocolate Lava Mug Cake. It’s rich enough for a celebration but so easy you can whip it up on a whim—no special occasion required. Go ahead, give this little chocolate wonder a try, and treat yourself or someone you love to a few blissful, melty bites tonight.