1/2 c. butter
1 pkg. yellow cake mix
1 (6 oz.) pkg. chocolate chips
1 bag marshmallows
1 can sweetened condensed milk
Cornflakes or similar cereal

Melt butter in 9 x 13 inch pan. Sprinkle cake mix over butter and pat down. Cover with chocolate chips, marshmallows and milk. Sprinkle on crushed cornflakes. Bake at 350 degrees for 20 minutes.