1/2 c. butter
3/4 c. brown sugar, packed
1 (6 oz.) pkg. chocolate chips
1/2 c. nuts, chopped (optional) (walnuts or peanuts)

Preheat oven to 400 degrees. Line a 10 x 15 inch jelly roll pan with graham crackers. (You may wish to spray pan with Pam first.) Melt butter on stove and add brown sugar. Stir on high heat until it bubbles and is foamy. Pour over crackers. Place in oven until it bubbles again. Remove from oven and sprinkle chocolate chips over top. Wait a few minutes until chips are shiny, they are melted and ready to spread with the back of the spoon. Sprinkle with nuts. Cool in refrigerator and break apart when set.