Toffee Graham Crackers

1 stack graham crackers broken into 1/4ths
2 sticks (1/2 pound) butter or margarine
1/2 cup granulated sugar
1 cup very finely chopped nuts (I use pecans)
1 jelly roll pan

Preheat oven to 350 degrees.
Mix the above ingredients in a small boiler. Bring to a rolling boil for 3 minutes. Remove from heat.

Add 1 teaspoon vanilla flavoring.

Place the graham crackers flat on the jelly roll pan. Pour the liquid mixture over them. Place the pan in the oven and bake 5-8 minutes. Remove them from the pan after they are cooled.