Preheat oven to 350 F. Spray a loaf pan with non stick spray.
In a large bowl, mix bananas, butter, eggs, yogurt and honey. Beat well until thoroughly combined.
In another bowl, combine the dry ingredients and mix to combine. Add to wet ingredients and mix until thoroughly combined. Using a rubber spatula, fold in jackfruit. Pour into prepared loaf pan.
In a small bowl, combine crumble ingredients until thoroughly combined. Sprinkle on top of bread batter.
Bake for 1 hour until tester inserted comes out clean.