Rich and Fudgy Chocolate Banana Muffins

Name: Fudgy Chocolate Banana Muffins
Prep time: 15 min
Cook time: 19 min
Total time: 44 min
Yield: 12 standard muffins
Cuisine: Greek
Ingredients: 1 1/2 cups all-purpose flour, spooned and leveled, 190g; 1/2 cup unsweetened cocoa powder, natural or Dutch-process, 45g; 1 teaspoon baking soda; 1/2 teaspoon baking powder; 1/2 teaspoon fine salt; 1/2 teaspoon instant espresso powder, optional, for deeper chocolate flavor; 1 1/4 cups mashed very ripe banana, about 3 medium bananas, 300g; 1/2 cup packed light brown sugar, 100g; 1/4 cup granulated sugar, 50g; 1/3 cup neutral oil, such as canola, vegetable, or avocado oil, 80ml; 2 large eggs, room temperature; 1/2 cup plain Greek yogurt or sour cream, room temperature, 120g; 1 teaspoon vanilla extract; 3/4 cup semisweet chocolate chips, divided, 130g

Imperial June 10, 2026June 10, 2026

Quick Recipe Version (TL;DR)

Yield: 12 standard muffins
Prep Time: 15 minutes
Cook Time: 19 minutes
Total Time: 44 minutes, including 10 minutes cooling

Quick Ingredients

1 1/2 cups all-purpose flour, spooned and leveled, 190g
1/2 cup unsweetened cocoa powder, 45g
1 teaspoon baking soda, 1/2 teaspoon baking powder, and 1/2 teaspoon fine salt
1/2 teaspoon instant espresso powder, optional but recommended
1 1/4 cups mashed very ripe banana, about 3 medium bananas, 300g
1/2 cup packed light brown sugar, 100g, plus 1/4 cup granulated sugar, 50g
1/3 cup neutral oil, 80ml
2 large eggs, room temperature
1/2 cup plain Greek yogurt or sour cream, 120g
1 teaspoon vanilla extract
3/4 cup semisweet chocolate chips, divided, 130g

Do This

1. Heat oven to 350°F and line a 12-cup muffin pan with paper liners.
2. Whisk flour, cocoa, baking soda, baking powder, salt, and espresso powder in a bowl.
3. In a separate bowl, mash bananas, then whisk in sugars, oil, eggs, yogurt, and vanilla.
4. Fold dry ingredients into wet ingredients just until no dry streaks remain.
5. Fold in 1/2 cup chocolate chips, then divide batter among the 12 muffin cups.
6. Top with remaining 1/4 cup chocolate chips and bake for 19 minutes at 350°F.
7. Cool in the pan for 10 minutes, then transfer to a rack and enjoy warm or fully cooled.

Why You’ll Love This Recipe

Deep chocolate flavor: Cocoa powder, chocolate chips, and a little espresso powder create a rich bakery-style taste without making the muffins complicated.
Naturally moist: Ripe bananas and Greek yogurt keep the crumb soft, tender, and slightly fudgy.
Easy to mix by hand: No mixer is needed, and the batter comes together in about 15 minutes.
Great anytime: These muffins work for breakfast, brunch, lunchboxes, snacks, or a simple dessert.

Grocery List

Produce: 3 medium very ripe bananas, about 300g mashed
Dairy: 2 large eggs, 1/2 cup plain Greek yogurt or sour cream
Pantry: All-purpose flour, unsweetened cocoa powder, baking soda, baking powder, fine salt, instant espresso powder, light brown sugar, granulated sugar, neutral oil, vanilla extract, semisweet chocolate chips

Full Ingredients

Dry Ingredients

1 1/2 cups all-purpose flour, spooned and leveled, 190g
1/2 cup unsweetened cocoa powder, natural or Dutch-process, 45g
1 teaspoon baking soda
1/2 teaspoon baking powder
1/2 teaspoon fine salt
1/2 teaspoon instant espresso powder, optional, for deeper chocolate flavor

Wet Ingredients

1 1/4 cups mashed very ripe banana, about 3 medium bananas, 300g
1/2 cup packed light brown sugar, 100g
1/4 cup granulated sugar, 50g
1/3 cup neutral oil, such as canola, vegetable, or avocado oil, 80ml
2 large eggs, room temperature
1/2 cup plain Greek yogurt or sour cream, room temperature, 120g
1 teaspoon vanilla extract

Chocolate

3/4 cup semisweet chocolate chips, divided, 130g

Step-by-Step Instructions

Step 1: Prepare the oven and muffin pan

Place a rack in the center of the oven and preheat to 350°F. Line a standard 12-cup muffin pan with paper liners, or lightly grease each cup with nonstick spray. This recipe makes 12 standard muffins, so each cup should be filled generously but not overflowing.

Step 2: Mash and measure the bananas

Peel the very ripe bananas and mash them in a large mixing bowl with a fork until mostly smooth with a few small soft pieces remaining. Measure out 1 1/4 cups mashed banana, about 300g. Using the measured amount matters because too much banana can make the muffins dense, while too little can make them drier.

Step 3: Whisk the dry ingredients

In a medium bowl, whisk together the 1 1/2 cups flour, 1/2 cup cocoa powder, 1 teaspoon baking soda, 1/2 teaspoon baking powder, 1/2 teaspoon fine salt, and 1/2 teaspoon espresso powder, if using. Whisk until the cocoa is evenly blended with the flour and no large cocoa clumps remain.

Step 4: Mix the wet ingredients

To the bowl with the mashed banana, add the 1/2 cup packed brown sugar, 1/4 cup granulated sugar, and 1/3 cup neutral oil. Whisk for about 30 seconds, until glossy and well combined. Add the 2 eggs, one at a time, whisking well after each addition. Whisk in the 1/2 cup Greek yogurt or sour cream and 1 teaspoon vanilla extract until the mixture looks smooth and creamy.

Step 5: Combine the batter gently

Add the dry ingredients to the wet ingredients. Use a flexible spatula to fold the batter together just until the flour and cocoa disappear. The batter will be thick, dark, and slightly glossy. Do not overmix; stopping as soon as the batter is combined helps the muffins stay soft and tender instead of rubbery.

Step 6: Fold in the chocolate chips and fill the pan

Fold in 1/2 cup of the chocolate chips, reserving the remaining 1/4 cup for the tops. Divide the batter evenly among the 12 prepared muffin cups, filling each one about 3/4 full. Sprinkle the reserved chocolate chips over the tops so they melt into glossy pockets as the muffins bake.

Step 7: Bake until set and fudgy

Bake at 350°F for 19 minutes, or until the tops look domed and set and a toothpick inserted into the center of a muffin comes out with a few moist crumbs. Avoid judging by melted chocolate on the toothpick; chocolate chips may smear even when the muffins are done. The muffins should spring back lightly when touched in the center.

Step 8: Cool before serving

Let the muffins cool in the pan for 10 minutes. Then transfer them to a wire rack. They are delicious warm, when the chocolate chips are soft and melty, but the banana-chocolate flavor becomes even deeper once the muffins cool completely.

Pro Tips

Use very ripe bananas: Bananas with plenty of brown spots give the best sweetness, moisture, and banana flavor.
Measure the cocoa carefully: Too much cocoa can make baked goods dry. Spoon it into the measuring cup and level it, or weigh 45g for best results.
Do not overmix: Fold the batter only until combined. A few tiny lumps are better than an overworked batter.
Use room-temperature eggs and yogurt: They mix more smoothly into the batter and help the muffins bake evenly.
Let them rest: If you can wait, the muffins taste even richer after 2 to 3 hours as the cocoa and banana flavors settle.

Variations

Double chocolate walnut banana muffins: Fold in 1/2 cup chopped toasted walnuts along with the chocolate chips for crunch and a nutty contrast.
Peanut butter swirl muffins: Warm 1/4 cup creamy peanut butter for a few seconds until loose, then spoon small dollops onto the filled muffin cups and swirl gently before baking.
Mocha banana muffins: Increase the espresso powder to 1 teaspoon for a more grown-up chocolate-coffee flavor.

Storage & Make-Ahead

Store cooled muffins in an airtight container at room temperature for 3 days. For longer storage, refrigerate them for up to 5 days, though they will taste best if brought to room temperature before serving. To freeze, wrap each cooled muffin tightly and place in a freezer-safe bag or container for up to 3 months. Thaw at room temperature for 1 hour, or microwave one muffin for 20 to 25 seconds until soft and warm. To make ahead, mash the bananas and whisk the dry ingredients separately up to 1 day in advance; combine the batter just before baking for the best rise.

Nutrition (per serving)