Mix crumbs, nuts, and raisins together. In a double boiler, melt butter and Sweetened and Condensed milk. Add in marshmallows and stir until smooth. Pour into nut mixture, stir well (this part is hard!). Butter your hands and mold cakes into whatever shape that flips your trigger (Leo and Peggy like the loaf shape). Place on waxed paper and refrigerate. You can also freeze these (wrap in tinfoil first).