Caramel Squares

2 cups graham cracker crumbs (about 20 graham crackers)
1 can sweetened condensed milk
1 (6 ounce) package butterscotch chips
1 cup chopped nuts

Preheat oven to 325 degrees F. Grease and flour 9-inch square pan.

Combine all ingredients and spread in pan. Bake for 20 to 25 minutes. Cut into squares while still warm.