Preheat oven to 350 degrees F for baking.

In a large mixing bowl, mix all ingredients together, stirring to thoroughly combine. Pour mixture into a greased 9 x 9 baking dish and place in preheated 350 degrees F oven for approximately 30-40 minutes, or until the center of this oat bake is set and no longer jiggles (if you have any doubts as to doneness, insert a long, wooden skewer into the center of bake—when it comes out moist but clean, the bake is done). This dish may then be served immediately or held up to 1 hour in warm (but turned off) oven.