With a food processor or blender, pulse oats into a flour (about a minute). In a medium bowl, mix together flour, brown sugar, baking soda, baking powder, cinnamon, and salt. In a large bowl, mix together eggs, mashed banana, coconut oil, maple syrup, milk, and vanilla. Add the flour mixture to the wet mixture and stir until fully combined, then fold in diced apples.
Preheat oven to 350 F. Coat loaf pan with nonstick cooking spray, then pour in batter. Bake 50 to 60 minutes or until toothpick comes out clean. Let cool before slicing. If desired, serve slices warm with a dab of butter. Store in an airtight container in fridge for up to a week or freeze for up to 2 months.
Per serving: 279 calories, 10 grams fat (6 grams saturated fat), 42 grams total carbohydrates, 282 milligrams sodium, 47 milligrams cholesterol, 4 grams fiber, 6 grams protein.