1 c. dark brown sugar
2 sticks butter
1 tsp. vanilla extract
1 c. pecans, chopped
Graham crackers to cover a 10 x 15 inch cookie sheet

Preheat oven to 350 degrees. Bake graham crackers 10 minutes. Place brown sugar and butter in a saucepan; bring to a boil stirring constantly. Boil exactly 2 minutes. Remove from heat. Add vanilla and pecans. Pour over graham crackers in sheet pan. Bake 10 more minutes. Cool and remove from pan.