I got this from PioneerWoman.com site. She calls it Scrumptious Apple Pie - and it is!
1 pie crust in pie pan, unbaked
6 to 7 apples, peeled & sliced
juice of 1/2 lemon
1/2 cup sugar
4 T flour
1/4 tsp salt
In a bowl, mix peeled apples, lemon juice, sugar, flour and salt. Set aside.
1/2 cup flour
1 1/2 sticks butter (3/4 cup)
1 cup brown sugar
1/2 cup oats
1/4 tsp salt
Cut butter into the flour with a pastry cutter, then add in brown sugar, oats and salt. This is your crumb topping. Set aside.
Add apples to prepared pie shell and top with crumb topping. (Place on a cookie sheet - its messy) Cover crust edge with aluminum foil and bake at 375°F for 25 minutes. Remove the foil from crust and and place back in the oven for 25 minutes.
Sprinkle on top of the pie
1/2 cup pecans, chopped
Return pie to oven for 5 minutes. Remove the pie from the oven.
Pour over the top.
1/2 jar of caramel ice cream topping
Allow the pie to cool slightly before serving.