100grams(½ cup) plain Greek yogurtroom temperature
340grams(about 3–4) medium ripe bananasmashed
240grams(2 cups) all-purpose flour
40grams(½ cup) unsweetened natural cocoa powder or Dutch process cocoa powder
3grams(1 teaspoon) groundcinnamon
1gram(¼ teaspoon) groundnutmeg
5grams(1 teaspoon) baking soda
5grams(1 teaspoon) baking powder
3grams(½ teaspoon) sea salt
135grams(¾ cup) semi-sweet chocolate chips
For Topping
1ripe bananachopped
12grams(1 tablespoon) white sugar
0.5gram(⅛ teaspoon) ground cinnamon
22grams(2 tablespoons) semi-sweet chocolate chips
Instructions
Preheat the oven to 350°F (175°C). Line a 6-cup jumbo muffin pan with parchment paper liners.
In a large mixing bowl, cream the butter and dark brown sugar together for 3 to 4 minutes until light and fluffy. This step builds air into the batter for a soft and tall loaf.
Add the eggs one at a time, mixing well after each addition. Scrape down the sides of the bowl, then mix in the vanilla until smooth and fully combined.
Add the Greek yogurt and mashed bananas, mixing until the batter is smooth. The mixture may look slightly curdled — that’s normal and helps create a moist texture.
In a separate bowl, whisk together the all-purpose flour, cocoa powder, cinnamon, nutmeg, baking soda, baking powder, and salt until evenly distributed.
Add the dry mixture to the wet ingredients in two additions, mixing on low speed or folding gently with a spatula until no streaks of flour remain. Do not overmix.
Gently fold in the chocolate chips.
In a small bowl, combine the chopped banana, granulated sugar, and cinnamon. Gently toss to coat.
Divide the batter evenly among the muffin cups, filling each about three-quarters full. Spoon a little of the banana topping mixture over each muffin and sprinkle a few chocolate chips on top.
Bake at 350°F (175°C) for 20–25 minutes, or until the tops are set and a toothpick inserted in the center comes out clean with just a few moist crumbs from the chocolate chips.
Let the muffins cool in the pan for 5 minutes, then transfer to a wire rack to cool completely.