Mix cake mix, eggs, SunButter®, and melted margarine together. Put 3/4 of batter in greased 9x13 pan. Melt chocolate chips, sweetened condensed milk, and margarine together; spread over cake mixture. Add small spoonfuls of remaining cake mixture to the top. Bake at 325° for 20-25 minutes.
Mary Nudell, Enderlin, ND