Preheat your oven to 180°C (375°F). Grease and line a loaf pan with parchment paper for easy removal.
Melt butter over a pan. In a large mixing bowl, mash the ripe bananas until smooth using a potato masher. Mix the egg, sugar, melted butter, and Greek yogurt with the mashed bananas. Whisk until well combined.
In a separate bowl, whisk together the flour, baking powder, and salt.
Gradually add the dry ingredients to the wet mixture. Stir gently until just combined—avoid overmixing to keep the bread tender.
Fold in the chocolate chips, reserving a small handful to sprinkle on top for extra chocolaty goodness.
Pour the batter into a loaf pan lined with baking paper and spread it out evenly.
Bake in the preheated oven for 45-50 minutes, or until a knife inserted into the center comes out clean.
Let the bread cool in the pan for about 1/2 hour. Slice and serve!