Dessert

Fudgy Molten Chocolate Lava Mug Cake

Rich, decadent chocolate cake with an oozing molten fudge center, made in a coffee mug in just 2 minutes in the microwave.

August 23, 2025 By Chef Clara 4.8 (188 votes)
Fudgy Molten Chocolate Lava Mug Cake
The Quick Takeaway

In a nutshell: This authentic american fudgy molten chocolate lava mug cake comes together in just 5 mins using simple whole ingredients. The chef's secret is to microwave wattage varies; check at 60 seconds. A slightly shiny center is the secret to a . Perfect for home cooks seeking a dependable, restaurant-quality finish with minimal effort.

Prep Time 3 mins
Cook Time 2 mins
Total Time 5 mins
Cuisine American
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The ultimate single-serve late-night chocolate dessert! Whisks together in 60 seconds directly inside a mug using pantry staples, microwave-baked to a fluffy tender crumb with a hidden chocolate truffle center that melts into luxurious warm fudge.

Key Equipment

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Chef's Pro-Tips

  • Do not overcook: microwave wattage varies; check at 60 seconds. A slightly shiny center is the secret to a fudgy texture.
  • Pro-Tip: Dutch-process cocoa powder gives a much richer, darker chocolate flavor than natural cocoa.
  • Pro-Tip: Add 1 tablespoon of peanut butter or Nutella to the center for a peanut butter lava variation!

Ingredients
1 servings

  • 3 tbsp all-purpose flour
  • 2 tbsp granulated sugar
  • 1 ½ tbsp unsweetened cocoa powder, Dutch-processed preferred
  • ¼ tsp baking powder
  • 1 pinch fine sea salt
  • 3 tbsp milk, dairy or plant-based
  • 1 ½ tbsp melted butter or coconut oil
  • ¼ tsp pure vanilla extract
  • 1 tbsp chocolate chips or chocolate truffle, pushed into center for molten lava core
  • 1 scoop vanilla bean ice cream, for serving
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Step-by-Step Instructions

1

Whisk Dry Ingredients in Mug

In a 10- to 12-oz microwave-safe ceramic mug, whisk flour, sugar, cocoa powder, baking powder, and salt together with a small fork until no lumps remain.

2

Add Wet Ingredients

Pour in milk, melted butter (or coconut oil), and vanilla extract. Whisk gently until a smooth, thick, glossy chocolate batter forms.

3

Insert Molten Chocolate Center

Drop a tablespoon of dark chocolate chips (or one dark chocolate truffle) right into the center of the batter. Do not stir; let it sink into the center.

4

Microwave to Perfection

Microwave on HIGH for 65 to 75 seconds (depending on microwave wattage). The top should look just set while the center remains gooey.

5

Top and Enjoy Warm

Let rest for 1 minute. Top with a cold scoop of vanilla ice cream or a swirl of whipped cream and chocolate shavings. Dig in warm!

Chef Clara's Kitchen Picks

Kitchen Essentials

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Nordic Ware Naturals Half Sheet, 2-Pack

Warp-resistant aluminum for even browning, from sheet-pan dinners to cookies.

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Victorinox Fibrox Pro 8" Chef's Knife

Razor-sharp Fibrox Pro blade that home chefs and pros both reach for.

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Amazon Basics Non-Stick Parchment Paper Roll

Non-stick paper for lining pans – easy release, easy cleanup.

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Woodenhouse Teak Wooden Spoons, 10-Pc

Teak spoons gentle on cookware and built for daily stirring.

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Silicone whisks safe for nonstick pans, in two sizes.

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Stainless racks that fit half sheets – for cooling bakes and crisping roasts.

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Nesting stainless bowls with airtight lids, from prep to storage.

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Hamilton Beach 6-Speed Electric Hand Mixer

Six speeds with a snap-on storage case for the beaters.

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Frequently Asked Questions

Yes! Use almond or oat milk and melted coconut oil or vegan butter. Ensure your chocolate chips are dairy-free.

Yes, bake in an oven-safe ramekin at 350°F (175°C) for 14 to 16 minutes until edges are set and center is soft.

Overcooking is the primary culprit. Reduce microwave time by 10-15 seconds for a softer crumb.