For 8 inch pie:

1 1/3 c. graham cracker crumbs
1/4 c. packed brown sugar
1/4 tsp. cinnamon
1/4 c. melted butter

For 9 inch pie:

1 1/2 c. graham cracker crumbs
1/3 c. packed brown sugar
1/2 tsp. cinnamon
1/3 c. melted butter

Put all ingredients into a medium size bowl and mix. With back of spoon, press mixture to sides and bottom of pie pan. Chill pie crust well.