Double Chocolate Mug Cake is my love letter to everyone who believes there’s no such thing as too much chocolate. I still remember the first night I made it rain tapping on my Oregon window, the aroma of cocoa filling the air, and a craving I couldn’t ignore. I whisked together flour, sugar, cocoa, and melted chocolate into my favorite mug, popped it into the microwave, and waited, humming an old jazz tune. Ninety seconds later, I pulled out a warm, rich, double-chocolate miracle.
What makes this Double Chocolate Mug Cake special is the way it perfectly balances light, fluffy cake with pools of melted chocolate chunks. Every bite feels like dipping a spoon into the heart of a freshly baked brownie—warm, gooey, and deeply comforting. And the best part? You don’t need an oven or fancy tools just five minutes, one mug, and a bit of love.
If you’ve already tried my Chocolate Mug Cake Recipe, this one is its more indulgent cousin denser, darker, and even more decadent. The added chocolate chunks make every spoonful melt into a velvety wave of flavor that satisfies the deepest cocoa cravings.
So, grab your favorite mug, cue your favorite song, and let this Double Chocolate Mug Cake remind you that joy doesn’t always come from grand gestures it can rise, warm and fragrant, in the palm of your hands.
Table of Contents
Table of Contents

Double Chocolate Mug Cake: A Rich, 5-Minute Dream for Chocolate Lovers
- Total Time: 5 minutes
- Yield: 1 mug cake
- Diet: Vegetarian
Description
This Double Chocolate Mug Cake is a rich, gooey, 5-minute dessert made right in your microwave. With cocoa powder, milk, and real dark chocolate chunks, it’s a warm, indulgent treat perfect for satisfying chocolate cravings instantly.
Ingredients
3 tablespoons all-purpose flour
2 tablespoons white or brown sugar
4 teaspoons cocoa powder
¼ teaspoon baking powder
Pinch of salt
3 tablespoons milk (whole milk preferred)
¼ teaspoon instant coffee (optional, enhances flavor)
½ teaspoon vanilla extract
2 tablespoons vegetable or canola oil
1½ tablespoons chopped dark chocolate or chocolate chips
Instructions
1. In a microwave-safe mug, mix flour, sugar, cocoa powder, baking powder, and salt.
2. In a separate bowl, dissolve instant coffee into milk, then pour into the dry mixture.
3. Add vanilla extract and oil, stirring gently until smooth and lump-free.
4. Fold in the chopped dark chocolate to create the double chocolate texture.
5. Microwave for 60–70 seconds, depending on your microwave power.
6. Allow to cool for 1–2 minutes before eating. Enjoy it warm for the best gooey, fudgy bite.
Notes
• For extra richness, add a few chocolate chips on top before microwaving.
• Use brown sugar for a softer, more fudgy texture.
• Don’t overcook! The cake should still look slightly glossy when finished.
• For a healthy twist, replace oil with applesauce or mashed banana.
• Enjoy with whipped cream or ice cream for the ultimate indulgence.
- Prep Time: 4 minutes
- Cook Time: 1 minute
- Category: Chocolate Mug Cakes
- Method: Microwave
- Cuisine: American
Mixing the Magic: How to Make the Perfect Double Chocolate Mug Cake
Making this Double Chocolate Mug Cake is like discovering instant happiness in a cup rich, moist, and deeply satisfying. You’ll only need a few basic ingredients and a microwave to create something that tastes like it took hours in the oven.
Ingredients You’ll Need

- 3 tablespoons all-purpose flour
- 2 tablespoons white sugar (or brown sugar for extra gooey texture)
- 4 teaspoons cocoa powder
- ¼ teaspoon baking powder
- 1 pinch of salt
- 3 tablespoons milk (whole milk works best)
- ¼ teaspoon instant coffee (optional, but enhances the chocolate flavor)
- ½ teaspoon vanilla extract
- 2 tablespoons vegetable or canola oil
- 1½ tablespoons chopped dark chocolate (50% cocoa recommended)
Step-by-Step Instructions
- In a large microwave-safe mug, whisk together flour, sugar, cocoa powder, baking powder, and salt until evenly mixed.
- In a separate small bowl, dissolve the instant coffee into the milk, then pour this into your dry ingredients.
- Add vanilla extract and oil, stirring gently until a smooth, lump-free batter forms.
- Fold in your chopped chocolate chunks — these are what make this cake double chocolate.
- Microwave for 60–70 seconds, depending on your microwave’s wattage. The cake should rise beautifully and feel soft to the touch, with melted chocolate peeking through.
- Allow it to cool for 1–2 minutes before digging in (the center continues to cook slightly as it rests).
Pro tip: If you love a molten texture, stop cooking a few seconds early just like in my Chocolate Lava Cake Mug Recipe. The melted chocolate center adds an indulgent, fudge-like finish that’s hard to resist.
This easy Double Chocolate Mug Cake is a dream come true for chocolate lovers rich like a bakery cake, yet quick enough for a midnight craving. And if you prefer egg-free desserts, don’t worry; this Double Chocolate Mug Cake no egg version stays moist and tender, thanks to the perfect balance of milk and oil.
Serving & Delicious Variations of the Double Chocolate Mug Cake
When it comes to serving this Double Chocolate Mug Cake, the key is timing it’s best enjoyed while still warm, when the chocolate chunks are melted and the cake is perfectly moist. The moment you dip your spoon into the center, you’ll understand why this recipe is a favorite among chocolate lovers everywhere.
How to Serve It
I like to enjoy my Double Chocolate Mug Cake fresh out of the microwave with a dollop of whipped cream or a scoop of vanilla ice cream. The cool cream melts slightly into the hot, fudgy cake, creating that irresistible hot-and-cold contrast. For an extra treat, drizzle some chocolate syrup or caramel sauce over the top.
You can even dust it with cocoa powder or add a few berries for a touch of freshness. Want to go all in? Try topping it with a spoonful of Nutella or peanut butter before microwaving it’ll sink into the center and turn into a molten core of bliss.
If you loved the dense, rich texture of my Chocolate Fudge Cake in a Mug, this Double Chocolate Mug Cake will be your next obsession. It’s slightly lighter but even more decadent, thanks to those hidden chunks of melted chocolate that make each bite feel luxurious.
Fun Variations to Try
- Best Double Chocolate Mug Cake – Use both dark and milk chocolate pieces for a richer, more balanced flavor.
- Double Chocolate Mug Cake Healthy – Replace oil with unsweetened applesauce and use almond milk to cut calories while keeping the same fudgy texture.
- 3-Ingredient Mug Cake – In a rush? Mix self-rising flour, cocoa powder, and milk for a minimalist version that still satisfies.
- Moist Chocolate Mug Cake – Add a spoon of yogurt or sour cream to keep it ultra-soft.
- Double Vanilla Twist – Swirl in a teaspoon of vanilla frosting before microwaving for a sweet marble effect.
This Double Chocolate Mug Cake proves that indulgence doesn’t require an oven or an occasion. It’s simple enough for a weekday treat, yet rich enough to serve as a date-night dessert.

Why This Double Chocolate Mug Cake Deserves a Spot in Your Recipe Book
The beauty of this Double Chocolate Mug Cake is how effortlessly it delivers pure chocolate bliss in minutes. Every spoonful is a balance of light, moist cake and gooey, melted chocolate chunks that melt into perfection. It’s rich, simple, and comforting everything a chocolate dessert should be.
I often make this Double Chocolate Mug Cake when I want something indulgent but quick. The scent of cocoa and vanilla fills my little Oregon kitchen, and for those few minutes, everything feels warm and sweet. Whether it’s for a movie night, a late-night craving, or a cozy self-care evening, this mug cake never disappoints.
If you enjoy smooth, balanced flavors, you’ll also love my Cake in Mug Chocolate. It’s a softer, airy version of this recipe, perfect for when you’re craving chocolate without the extra richness.
And for those moments when you want something simple and fluffy, my Easy Chocolate Mug Cake in Microwave is your go-to. It’s a beginner-friendly recipe with all the comfort of homemade chocolate cake no oven, no stress.
So whether you’re a dedicated chocoholic or just want to brighten your day with something sweet, this Double Chocolate Mug Cake is proof that joy can rise in a mug. Quick, rich, and absolutely divine dessert doesn’t get more satisfying than this.
Looking for more sweet inspiration?
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FAQs About Double Chocolate Mug Cake
Can I make this Double Chocolate Mug Cake without eggs?
Yes! This recipe is completely egg-free. The oil and milk provide all the moisture you need, keeping your Double Chocolate Mug Cake soft and fluffy.
What makes it “double” chocolate?
The combination of cocoa powder in the batter and real chocolate chunks folded in creates two layers of flavor — deep cocoa and molten richness.
How do I make a healthier Double Chocolate Mug Cake?
For a double chocolate mug cake healthy version, use almond milk, replace sugar with honey or stevia, and swap oil for mashed banana or applesauce.
Why is my mug cake rubbery?
That usually means it’s been overcooked. Try microwaving it for 60 seconds first and adding 10-second intervals until the texture is moist and springy.
Can I use instant cocoa instead of cocoa powder?
You can, but for the best flavor, stick with pure unsweetened cocoa powder. It gives this Double Chocolate Mug Cake that deep, bakery-style chocolate taste.
