1/2 c. butter
1/2 c. brown sugar
1 c. flour
1/2 c. graham cracker crumbs
2 c. miniature marshmallows
6 oz. pkg. semi-sweet chocolate
1/2 c. chopped nuts

Cream butter and sugar until light and fluffy. Add dry ingredients; mix well. Press into bottom of greased 9 inch square pan; sprinkle with remaining ingredients. Bake at 275 degrees for 15-20 minutes until golden brown. Cool; cut into bars.