Step 1: Preheat your oven to 350°F (175°C).
Step 2: Grease your 9x5 inch loaf pan with butter or non-stick spray.
Step 3: In a large mixing bowl, whisk together melted butter, sugar, and eggs until well combined. Stir in mashed bananas, Greek yogurt, and vanilla extract until smooth.
Step 4: In another bowl, whisk together flour, baking powder, and salt. Gradually add to the wet mixture, folding gently to combine.
Step 5: Gently fold in 1 ½ cups of mixed berries, reserving the remaining ½ cup for topping.
Step 6: Pour the batter into the prepared loaf pan and sprinkle the reserved berries on top. Bake for 55-65 minutes, or until a toothpick comes out clean.
Step 7: While the bread is baking, whisk together lemon juice and powdered sugar until smooth.
Step 8: Once baked, let the bread cool in the pan for 10 minutes, then transfer to a cooling rack and drizzle with lemon glaze.
