Hot Chocolate Mug Cake {Microwave Dessert}
Warm. Soft. Chocolate-y. Cold winter nights call for a treat that warms you from the inside out. This Hot Chocolate Mug Cake tastes just like a cup of hot cocoa in cake form. Everything happens in one mug … a splash of milk, a swirl of oil, a touch of vanilla, a packet of hot chocolate mix, and a few extra baking ingredients to create the softest one-minute mug cake! Top it however you like, smell the cocoa, and enjoy the comfort of something simple made just for you.
The Little Joys Inside This Bake
- A one-minute dessert that feels extra cozy
- The soft rise of warm cake from a single mug
- Melted chocolate chips that create little pools of decadence
- The nostalgic aroma of a cup of hot cocoa
- The quiet calm of that first warm spoonful
Everything You Need for Hot Chocolate Mug Cake
Ingredients
- Milk – Dairy or unsweetened non-dairy both work well. Oat milk gives extra richness.
- Oil – Canola, vegetable, or any neutral oil.
- Splash of vanilla extract
- Hot chocolate mix – Any brand you love.
- All-purpose flour
- Baking powder
- Pinch of salt
- Semi-sweet chocolate chips – Mini chips melt fastest, but any type is fine.
Optional Toppings
- Whipped cream
- Mini marshmallows
- Shaved chocolate or mini chocolate chips
- Chocolate sauce
Mindful Moments
- Feel the warmth in your hand after the first 30-second milk heat
- Breathe in the scent of hot cocoa as your chocolate mixes into your hot milk
- Watch as your cake transforms from a liquidy cup of cocoa to a soft little cake
- Practice patience as you let the cake rest for the last minute to allow the flavours deepen.
- Making mug cakes are a quiet cue to slow down and enjoy the simple things in life
If you’re craving another quiet, chocolatey pause later this week, my Chocolate Lava Cake offer the same warm comfort.
Storage + Make-Ahead Tips
- Mug cakes are best enjoyed immediately.
- Pre-measure dry ingredients in a small jar for quick “mug cake kits” ready anytime.
- If needed, you can refrigerate leftovers for up to 1 day and rewarm for 5–10 seconds, but the texture will be softer and denser.
Before You Bake: FAQ
Can I make this dairy-free?
Absolutely! Just like your favourite cup of hot chocolate, you can use your preferred dairy or non-dairy milk. Water is also an option to replace the milk with and dairy-free chocolate chips can be used in place of traditional ones.
My mug cake came out gummy. What happened?
Overmixing or microwaving too long can cause this. I recommend mixing just until combined and sticking to the recommended cook time. Since all microwaves heat differently, if you know that your microwave heats up quickly either reduce the power and reassess after 1 min (allowing for additional checks every 15 seconds until a toothpick comes out with a few crumbs attached) or simply heat for 45 seconds before reassessing.
Can I double this recipe?
Of course! This Hot Chocolate Mug Cake recipe is for 1 serving however can be very easily doubled to create two individual mugs. I recommend cooking each individually as two in the microwave will lengthen the cook time.
What size mug should I use?
A 12-oz mug or larger is perfect to prevent overflow.
How It All Comes Together
Warm the base.
Add milk, oil, and vanilla to a 12-oz (or larger) mug. Microwave for 30 seconds until warm.
Build the batter.
Stir in the hot cocoa mix, flour, baking powder, and a pinch of salt.
Mix with a fork until smooth.
Add the melty bits.
Fold in the chocolate chips.
Microwave.
Heat on high for 1 minute. The cake should rise and look set on top. (note: you can check for readiness by inserting a toothpick into the centre and noticing a few crumbs stick to it)
Let it rest.
Wait 1 minute. This helps the crumb settle and become soft and tender.
Top it off.
Top with whipped cream, mini marshmallows, chocolate chips, shavings, or a drizzle of chocolate sauce.
Serve warm, straight from the mug.
Also check out:
Molten Nutella Lava Cake
Triple Chocolate Chip Cookies
Cookie Butter Chocolate Bark
Hot Chocolate Mug Cake
Ingredients
- 1/4 cup Milk
- 1 tbsp Oil (Canola or other light vegetable oil)
- a splash of Vanilla Extract
- 1 package Hot Chocolate Mix approx. 1/4 cup of hot cocoa mix
- 3 tbsp All-purpose Flour
- 1/4 tsp Baking Powder
- a pinch of salt
- 2 tbsp Semi-sweet chocolate chips
Toppings
- Whipped Cream
- Shaved Chocolate/Mini chocolate chips/Chocolate sauce
- Mini Marshmallows
Instructions
- Add milk, oil, and vanilla extract to a mug (12 oz or larger). Microwave for 30 seconds.
- Add hot cocoa mix, flour, baking powder, and a pinch of salt. Mix with a fork until combined.
- Add chocolate chips and stir into the batter.
- Microwave on high for 1 minute. Allow to cool for another minute. (note: you can check for readiness after cooking by inserting a toothpick into the centre and noticing a few crumbs stick to it)
- Top with whipped cream, mini marshmallows, and/or chocolate chips/shavings/sauce and enjoy!