In a mixing bowl combined eggs, brown sugar, baking powder, vanilla, cinnamon, and salt. Mix well, no lumps. Whisk in butter and milk. Add oats and fruit, stir until combined. Pour in to greased 9×9 baking dish.
Refrigerate overnight, covered. (If you’re using quick oats, you do not need to refrigerate overnight.)
Bake, uncovered, at 350 for 35-45 min, or until set in the middle. Serve hot with warm milk poured over.