1/2 c. butter
1/2 c. brown sugar
1 c. flour
1/2 c. graham cracker crumbs
2 c. miniature marshmallows
1 (6 oz.) pkg. chocolate chips
1/2 c. chopped walnuts or pecans

Beat butter and sugar until light and fluffy. Add flour and crumbs. Mix well. Press into a greased 9 inch pan, then sprinkle remaining ingredients on top. Bake at 375 degrees for 15 to 20 minutes. Makes 16 bars.