Pour the ingredients into a mixer, or stir them by hand
Pour the oatmeal mixture into a lightly greased pie plate. The mixture looks pretty wet, but it’ll be perfect when it’s done baking.
Bake at 350 degrees for 30-40 minutes. The depth of your pan could potentially change baking time.
A few tips: If the mixture looks really wet, add some more oats (that's where the 4-5 cups comes from in the ingredient list) You can cut the sugar. I've used as little as 1/4 cup brown sugar and added a couple drops of Stevia. It was still delicious.