The flavors of fall in a classic dessert! So easy to make, and a family favorite.
Preheat your oven to 375 degrees. Spray a 9x13 dish with cooking spray.
In a medium sized bowl, mix together the following ingredients to make your crumb topping: flour, oats, brown sugar, baking powder, cinnamon and salt.
Next, add the diced butter. Using your hands, rub the butter into the dry mixture until it's well combined and crumbly. Place in refrigerator to cool while preparing apple filling.
In a bowl, whisk together the melted butter and flour then add water, lemon juice and vanilla. Finally add cinnamon and brown sugar. Be sure to mix well so there are no chunks of brown sugar.
Place apples in your 9x13 baking dish. Pour butter mixture over apples and toss to coat the apples well. Spread apples in dish, evenly.
Remove crumb topping from fridge and sprinkle evenly across apples.
Bake in preheated oven about 35-40 minutes or until top is brown and apples are tender.
Let cool ten minutes. Serve with vanilla ice cream and a drizzle of caramel sauce.