Quick Microwave Chocolate Frosting for Cakes
Desserts

Quick Microwave Chocolate Frosting for Cakes

ML
By Marie Lefebvre · Updated October 11, 2026

A rich, velvety chocolate frosting made effortlessly in the microwave with just four pantry staples. Ready in under 20 minutes, this foolproof recipe delivers a decadent finish perfect for layer cakes, cupcakes, or brownies. No stovetop, no fuss — just pure chocolate indulgence.

Prep⏱️ 15 min
Servings👥 4 servings
Difficulty📊 Very Easy
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🛒 Ingredients

4 servings

4
  • 2 cans (14 oz / 400 g each) sweetened condensed milk
  • 1 cup (200 ml) heavy cream
  • 8 tablespoons unsweetened cocoa powder
  • 1 tablespoon unsalted butter

Directions

  1. 1

    In a large microwave-safe bowl, combine the sweetened condensed milk, heavy cream, butter, and cocoa powder. Whisk until smooth and fully incorporated with no lumps.

  2. 2

    Microwave on full power for 12 to 15 minutes, pausing every 3 to 4 minutes to stir and check the consistency.

  3. 3

    The frosting is ready when it thickens noticeably and coats the back of a spoon with a slow, steady drip.

  4. 4

    Remove from the microwave and let rest for 2 minutes, then pour and spread generously over your cake while still warm.

  5. 5

    Finish with chocolate sprinkles, dark chocolate shavings, or a dusting of cocoa powder to your liking.

💡 Chef's Tip

For deeper chocolate flavor, replace 2 tablespoons of cocoa with melted dark chocolate. Leftovers keep in an airtight container in the fridge for up to 5 days — reheat gently in the microwave in 30-second bursts before using.