Preheat oven to 375°F. Spray an 8x8 baking dish with non-stick spray.
In a large bowl, mix together rolled oats, cinnamon, baking powder, salt, almond milk, applesauce, maple syrup, flaxseed, coconut oil and vanilla.
Fold in raisins and ¾ cup of the diced apples.
Pour mixture into prepared baking dish and top with remaining ¼ cup of diced apples.
Bake about 40 minutes or until the center has set and a toothpick comes out clean. Allow baked oatmeal to cool just a bit before serving. Serve with a drizzle of almond butter, almond milk, or maple syrup.
Store in the refrigerator in an airtight container for up to 4 days. To reheat the whole baked oatmeal, cover with foil and reheat in a 350°F oven for about 20 minutes. For individual portions, set oven (or toaster oven) to 350°F and bake for 5-10 minutes or reheat in the microwave for 1 minute.