Place the peeled and sliced apples into a large mixing bowl. Set aside.
In a medium bowl, toss together the crumb topping ingredients and blend into small crumbs with your hands.
Now for the apple glaze filling–use a small bowl to add the melted butter and flour and blend well with a fork. Squeeze juice from half a lemon, and milk and vanilla and continue to stir. Next, stir in brown sugar, dash of salt and cinnamon.
Pour the apple glaze over the apples and toss to coat. Transfer into an 8.8-inch baking dish and spread evenly. Add the crumb topping evenly over the apples.
Bake for 30-35 minutes or until crumbs are golden brown. Let cool for 10 minutes. Don’t forget to add vanilla ice cream or cool whip!