This lovely apple dessert was in the Taste of Home magazine issue from December 2012/January 2013. The recipe originated with Char Morse from Michigan. She fixed this dish for the nearby Muskegon Rescue Mission, a homeless shelter, to help teach her children about homeless children.
Preheat oven to 350°F. In a large bowl, beat the butter, brown sugar, cinnamon and salt, until crumbly. Add flour and oats; mix well. Press 3 cups oat mixture onto the bottom of a greased 9x13x2 inch baking dish.
In another bowl, mix the first five filling ingredients. Add apples and vanilla; toss to combine. Spoon over oat layer. Dot with butter; sprinkle with remaining oat mixture.
Bake, uncovered, for 45-50 minutes, or until golden brown and apples are tender. If desired, serve with toppings.