Healthy Cinnamon Apple Banana Bread

Name: Healthy Cinnamon Apple Banana Bread
Ingredients: 2 cups (240g) whole wheat or gluten-free* flour (measured like this); 1 tsp baking powder; ½ tsp baking soda; 1 ¼ tsp ground cinnamon; ¼ tsp ground nutmeg; ¼ tsp salt; ½ tbsp (7g) unsalted butter or coconut oil, melted and cooled slightly; 2 large egg whites, room temperature; 1 ½ tsp vanilla extract; ¼ cup (60g) plain nonfat Greek yogurt; ¾ cup (200g) mashed banana (about 2 medium); 2 tbsp (30mL) pure maple syrup; ¼ cup (60mL) nonfat milk; 1 ⅓ cups (167g) finely diced apple