Mom's Delicious Apple Pie

I've tried lots of apple pies, with the fancy pie dough crusts on the top and none of them compare to Mom's Apple Pie.

Pie

5-6 large granny smith apples
1/2 cup brown sugar
2 T flour
1/2 tsp. cinnamon

Combine sugar, flour, cinnamon and toss with the apple chunks. Put in a homemade pie shell.

Topping

1/2 cup sugar
1/4 tsp. cinnamon
1/2 cup flour
1 stick butter

Combine sugar, cinnamon and flour. Cut in butter and sprinkle over apples to make top crust. Put in brown paper bag and tie. Bake at 425 for 1 hour. (Don't worry the bag does not burn)!