This cake can easily be make in a 9×13 pan! Bake at 325 for 40-50 minutes. When you remove the cake from the oven, cool 15 minutes, poke holes into it and pour the entire can of sweetened condensed milk over top. Place into the refrigerator until sweetened condensed milk has been absorbed. Make frosting as listed above, but fold in 1 cup plain whipped cream. Frost cake and top with walnuts. Store in refrigerator until ready to serve.