3 Microwave Mug Muffins: Fluffy & Soft

A Note on This Recipe

Prepare to be amazed by these eggless, microwave-baked muffins. Their fluffy, moist, and soft texture is reminiscent of freshly baked muffins straight out of the oven.

The secret ingredient that makes all the difference is sour cream. Keep this recipe close at hand for those times when you crave something sweet and need a quick fix. Be sure to follow the instructions carefully for the best outcome.

Banana Mug Muffin

Banana Mug Muffin

Prepare the Batter
Melt the unsalted butter in a small microwave-safe cup (about 5 oz). While still hot, add the sugar and mix to dissolve. Add the sour cream and mix until smooth and creamy. Add the banana and mash until fully blended. Add the dry ingredients and mix until no streaks of flour remain, being careful not to overmix. Stir in the chopped walnuts.

Microwave
Microwave for about 1 minute, then an additional 10 seconds, or until set. Adjust cooking time based on your microwave’s wattage. Remove and garnish with banana slices.

Blueberry Mug Muffin

Blueberry Mug Muffin

Prepare the Batter
Melt the unsalted butter in a small microwave-safe cup (about 5 oz). While still hot, add the sugar and mix to dissolve. Add the sour cream and vanilla extract, and mix until smooth and creamy. Add the dry ingredients and mix until no streaks of flour remain, being careful not to overmix. Stir in the blueberries.

Microwave
Microwave for about 1 minute, then an additional 10 seconds, or until set. Adjust cooking time based on your microwave’s wattage. Remove and garnish with blueberries.

Chocolate Mug Muffin

Chocolate Mug Muffin

Prepare the Batter
Melt the unsalted butter in a small microwave-safe cup (about 5 oz). While still hot, add the sugar and mix to dissolve. Add the sour cream and vanilla extract, and mix until smooth and creamy. Add the dry ingredients and mix until no streaks of flour remain, being careful not to overmix. Stir in the chocolate chips.

Microwave
Microwave for about 1 minute, then an additional 10 seconds, or until set. Adjust cooking time based on your microwave’s wattage. Remove and garnish with chocolate chips.

Breakfast for One

3 Microwave Mug Muffins

Fluffy, moist, and eggless — these microwave mug muffins are ready in minutes thanks to one secret ingredient: sour cream. Choose from banana walnut, blueberry, or chocolate chip, and enjoy a warm, bakery-style treat without turning on the oven.
Yield: 1 Serving (per variation)
Total Time: 5 minutes

Ingredients
  

Banana Mug Muffin
  • 1 tbsp unsalted butter
  • 1 tbsp sugar
  • 2 tbsp sour cream
  • 1 tbsp banana mashed
  • 3 tbsp all-purpose flour
  • ¼ tsp baking powder
  • ¼ tsp cinnamon powder
  • A tiny pinch of salt
  • 1 tbsp chopped walnuts
Blueberry Mug Muffin
  • 1 tbsp unsalted butter
  • 1 tbsp sugar
  • 2 tbsp sour cream
  • ¼ tsp vanilla extract
  • 3 tbsp all-purpose flour
  • ¼ tsp baking powder
  • A tiny pinch of salt
  • 1 tbsp fresh or frozen blueberries
Chocolate Mug Muffin
  • 1 tbsp unsalted butter
  • 1 tbsp sugar
  • 2 tbsp sour cream
  • ¼ tsp vanilla extract optional
  • 2 tbsp all-purpose flour
  • 1 tbsp unsweetened cocoa powder
  • ¼ tsp baking powder
  • A tiny pinch of salt
  • 1 tbsp chocolate chips

Instructions

  1. Melt the butter in a microwave-safe mug (about 5 oz).
  2. While still hot, stir in the sugar until dissolved. Add the sour cream and mix until smooth. (Banana: mash in the banana. Blueberry & Chocolate: stir in the vanilla extract.)
  3. Add the dry ingredients and mix until no flour streaks remain. Do not overmix. (Chocolate: add cocoa powder).
  4. Fold in your mix-ins — walnuts, blueberries, or chocolate chips.
  5. Microwave for about 1 minute, then an additional 10 seconds, or until the top looks set.
  6. Garnish with a few extra toppings and enjoy immediately.

Watch the Recipe

Notes

Microwave wattages vary, so keep an eye on your muffin the first time you make it — start checking at the 1-minute mark. The muffin is done when the top looks set and no longer wet. Best enjoyed immediately while warm and fluffy.
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Hi, I’m Kim—I love coffee, quiet mornings, and the little joys a good bite brings. I share simple, thoughtful recipes inspired by my life living in different countries and the flavors I’ve gathered along the way.

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