Hot Cocoa Marshmallow Mug Cake

Hot Cocoa Marshmallow Mug Cake

A cozy chocolate mug cake with melty mini marshmallows—pure hot-cocoa vibes in about a minute.

Hot cocoa marshmallow mug cake
Hands-on: 5–6 min Cook: 60–70 sec Yield: 1 mug cake

Ingredients

  • 4 tbsp all-purpose flour
  • 3 tbsp sugar
  • 1 tbsp unsweetened cocoa powder
  • 1/8 tsp baking powder
  • Pinch fine salt
  • 3 tbsp milk
  • 1 tbsp neutral oil
  • 1/4 tsp vanilla extract
  • 2 tbsp mini marshmallows
Cocoa tip: For deeper flavor, use Dutch-process cocoa and a tiny pinch of espresso powder (optional).

Step-by-Step

  1. Mix dry. In a 12–14 oz microwave-safe mug, whisk flour, sugar, cocoa, baking powder, and salt.
  2. Stir in wet. Add milk, oil, and vanilla; whisk until smooth.
  3. Add marshmallows. Press mini marshmallows into the batter.
  4. Microwave. Cook on HIGH 60–70 seconds until cake rises and is just set. Rest 1 minute; enjoy warm.
Topping ideas: Whipped cream, extra mini marshmallows, a dusting of cocoa, or a drizzle of Peppermint Mocha Syrup.

Variations & Swaps

  • Mocha: Swap 1 tbsp milk for brewed coffee.
  • S’mores: Add 1 tbsp crushed graham crackers on top after cooking; torch marshmallows if you like.
  • Dairy-free: Use plant milk and dairy-free marshmallows.
Yield1 serving
Total Time~7–8 minutes including resting
StorageBest fresh; rewarm 10–15 sec if needed.
AllergensWheat; dairy (if using dairy milk)