3 rhubarb cream cheese coffee cake Recipes

yellow cake mix (regular size), divided, brown sugar, butter, chopped walnuts, sour cream, eggs, king arthur unbleached all-purpose flour, chopped fresh or frozen rhubarb, sliced fresh strawberries, cream cheese frosting or vanilla ice cream, optional

yellow cake mix, divided, brown sugar, cold butter or 2 tbsp margarine, chopped walnuts, eggs, sour cream, chopped fresh rhubarb, sliced fresh strawberries, cream cheese frosting (optional)