There are high fiber, moist, light, tasty, quick, and simple to make--great when you're on the go in the morning. All the makings of a fantastic breakfast muffin.
Preheat the oven to 375 degrees F (190 degrees C). Grease 12 muffin cups with cooking spray.
Mix whole wheat flour, baking powder, cinnamon, and salt together in a separate bowl.
Mix apples, nonfat milk, vegetable oil, maple syrup, and brown sugar in another bowl. Gently fold in egg. Pour into flour mixture. Stir until batter is lumpy and just moistened.
Spoon batter into the prepared muffin cups, filling each 2/3 full.
Bake in the preheated oven until a toothpick inserted into the middle comes out clean, about 20 minutes. Cool in the tin for 5 minutes. Transfer to a wire rack to cool completely.