Preheat oven to 350 degrees. Grease a 9x13 inch pan.
In a large bowl, combine pineapple, banana, eggs, maple syrup and vanilla. Mix well. Add milk. Stir.
Add remaining dry ingredients, cinnamon, ginger, nutmeg, baking powder, and oats. Mix well.
Pour into 9x13 inch pan.
Bake for 45 - 50 minutes, or until edges are golden brown and center is firm.