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One-Bowl Low-Carb Chocolate Lava Cake

A rich molten chocolate cake ready in minutes. This single-bowl treat delivers a gooey center with no added sugar, perfect for a quick low-carb dessert.
Course Dessert
Cuisine American
Keyword Chocolate Keto Desserts:, Keto Lava Cake, One Bowl Dessert
Prep Time 5 minutes
Cook Time 2 minutes
Total Time 7 minutes
Servings 3
Calories 463kcal

Equipment

  • Medium microwave-safe mixing bowl
  • Silicone whisk
  • Spatula
  • Three 8- to 10-ounce microwave-safe ramekins or coffee mugs
  • Butter or nonstick spray for greasing
  • Instant-read thermometer optional

Ingredients

  • ½ cup 60 g Dutch-processed cocoa powder
  • ½ cup 96 g powdered monk fruit-erythritol blend
  • ¼ tsp fine sea salt
  • 3 tbsp 42 g unsalted butter, melted and cooled slightly
  • 3 large eggs at room temperature
  • 3 tbsp 45 ml heavy whipping cream
  • 1 tsp vanilla extract
  • About 3 oz 85 g high-quality sugar-free dark chocolate, roughly chopped
  • Butter or nonstick spray for greasing

Instructions

  • Grease the ramekins or mugs. In a microwave-safe bowl, melt the butter 30 to 40 seconds on high, then let it cool 1 minute.
  • Whisk in the cocoa powder, powdered sweetener, and salt until a thick glossy paste forms.
  • Add the eggs one at a time, whisking well after each. Whisk in the cream and vanilla until smooth and slightly aerated.
  • Divide the batter evenly among the three ramekins, filling each half to two thirds full.
  • Press one third of the chopped chocolate into the center of each portion, just below the surface.
  • Microwave one at a time on full power 60 to 100 seconds in a 1000 W microwave, starting at 60 seconds. The cake should pull from the sides and the center should look soft and slightly glossy. If needed, continue in 10 to 15 second bursts.
  • Rest 1 minute. Serve immediately. Optionally invert onto a small plate.

Notes

  • For deeper flavor, add ½ tsp instant espresso powder with the cocoa.
  • Choose sugar-free chocolate without maltitol when possible.
  • Ideal doneness: edges set, center jiggly not liquid.
  • Food safety: for a molten center use pasteurized eggs. If using regular eggs, cook until the center reaches 71°C which will reduce fluidity.
  • Best enjoyed fresh. Refrigerate leftovers up to 2 days. Reheat 20 to 30 seconds.
  • Serve with unsweetened whipped cream, a few berries, or a light dusting of powdered sweetener.
Nutrition Facts per Serving (1 of 3 cakes):
Calories: 463 kcal | Total Fat: 39.5 g (Saturated Fat: 23.2 g) | Total Carbs: 52.9 g (Fiber: 10.2 g, Net Carbs: 10.7 g) | Protein: 14.5 g | Sodium: 284 mg.
Disclaimer: Nutrition information is estimated based on USDA data and is for informational purposes only. It does not constitute medical advice. Please consult a healthcare professional for specific dietary concerns.