Preheat oven to 350F. Butter a baking pan or line with parchment paper.
In a mixing bowl, mash bananas. Add melted butter, sugar vanilla and egg. Combine.
3 very ripe bananas, 3/4 cup sugar, 1 large egg, 1 tsp vanilla extract, 1/3 cup melted butter
In a separate bowl, mix flour, baking soda, and salt. Combine with banana mixture.
1.5 cups all purpose flour, ½ tsp baking soda, Pinch salt
Fold frozen Haskap berries into batter. Pour batter into prepared loaf pan.
1 cup haskap berries
Bake for 50 min or until a toothpick inserted in center comes out clean.