In a large mixing bowl, combine mashed bananas, milk, egg, maple syrup, peanut butter, baking powder, cinnamon, salt, and half of the chopped peanuts.
1 cup Milk, 2 Bananas, 1 large Egg, 2 Tablespoon Maple Syrup, ⅓ cup Peanut Butter, ½ teaspoon Baking Powder, ½ teaspoon Cinnamon, ¼ teaspoon Salt