Extra-Fudgy Dark Chocolate Banana Bread Muffins with Walnuts

Published: February 19, 2026
Jimmy JohnsonJimmy Johnson
Tags: Chocolate, Dessert, Baking, Breakfast, snack, Banana, Muffins

Banana Muffins

These muffins are the sort of recipe I make when ripe bananas need a purpose and chocolate cravings demand a remedy. They’re extra fudgy thanks to dark cocoa and generous chopped dark chocolate, but they still have that banana-bread warmth — tender crumb, caramelized edges, and crunchy walnut bites throughout.

They come together quickly and are great for breakfast, an afternoon pick-me-up, or dessert with a scoop of ice cream. I love finishing them with a tiny pinch of sea salt to highlight the chocolate; they keep well and even taste better the next day.

Ingredients

  • 1 3/4 cups All-purpose flour
  • 1/2 cups Unsweetened dark cocoa powder
  • 1 tsp Baking soda
  • 1/2 tsp Baking powder
  • 1/2 tsp Salt
  • 3/4 cups Granulated sugar
  • 1/2 cups Light brown sugar, packed
  • 1 1/2 cups Mashed ripe bananas
  • 2 pieces Eggs
  • 1/2 cups Unsalted butter, melted
  • 1/3 cups Plain Greek yogurt
  • 1 tsp Vanilla extract
  • 1 tsp Espresso powder (optional)
  • 6 oz Dark chocolate chips or chopped dark chocolate
  • 1/2 cups Chopped walnuts
  • 1/4 tsp Coarse sea salt (for sprinkling)
  • 12 pieces Paper muffin liners

Instructions

  1. Preheat the oven to 375°F and line a 12-cup muffin tin with paper liners.

  2. Whisk together the flour, cocoa powder, baking soda, baking powder, and salt in a large bowl until evenly combined.

  3. In a separate bowl, whisk the granulated sugar, brown sugar, eggs, mashed bananas, melted butter, Greek yogurt, vanilla, and espresso powder until smooth.

  4. Pour the wet ingredients into the dry ingredients and gently fold with a spatula until just combined — don’t overmix.

  5. Fold in 4 oz of the dark chocolate and the chopped walnuts, reserving a handful to sprinkle on top of the muffins.

  6. Spoon the batter into the prepared muffin cups, filling each about 3/4 full. Top each with remaining chocolate and walnuts.

  7. Bake for 18–22 minutes, rotating the pan halfway through, until a toothpick inserted into the center comes out with a few moist crumbs.

  8. Remove from the oven and immediately sprinkle each muffin with a tiny pinch of coarse sea salt.

  9. Let the muffins cool in the tin for 5–7 minutes, then transfer to a wire rack to cool completely.

  10. Store cooled muffins in an airtight container at room temperature for up to 3 days, or freeze for longer storage.

Tips & Notes

  • Use very ripe bananas (lots of brown spots) for the best banana flavor and natural sweetness.
  • If you don’t have Greek yogurt, sour cream or buttermilk works fine — they keep the muffins tender and moist.
  • Don’t overmix the batter; a few streaks of flour are okay and help ensure a tender crumb.
  • For extra fudginess, press a small piece of chopped dark chocolate into the top of each muffin before baking.