Banana Apple Bread
1 cup butter, melted 1 cup plain Greek yogurt 1 tablespoon ground cinnamon 1 teaspoon baking soda 1 ½ teaspoons vanilla extract 2 apples, cubed 2 cups white sugar 2 teaspoons ground cinnamon 2 ¾ cups all-purpose flour 3 large very ripe bananas, mashed 3 tablespoons butter, softened 4 eggs apple slices for garnish banana slices for garnish ¼ cup all-purpose flour ½ cup packed brown sugar ½ cup white sugar ½ teaspoon salt ¾ cup chopped walnuts