Rhubarb Berry Coffee Cake - cooking recipe

Ingredients

1 (18 1/4 ounce) package yellow cake mix, divided
2/3 cup packed brown sugar
2 tablespoons cold butter or 2 tablespoons margarine
3/4 cup chopped walnuts
2 eggs
1 cup sour cream
1 1/2 cups finely chopped fresh rhubarb
1 1/2 cups sliced fresh strawberries
1/2 cup cream cheese frosting (optional)

Preparation

In a bowl, combine 2/3 cup cake mix and sugar; cut in butter until crumbly. Add walnuts; set aside. Place remaining cake mix in another bowl; add the eggs and sour cream. Fold in rhubarb and strawberries. Spread into a greased 13 x 9 x 2-inch baking dish. Spring with reserved crumb mixture.
Bake at 350\u00b0F for 40-50 minutes or until a toothpick inserted near the center comes out clean. Cool on a wire rack. If desired, place fosting in a microwave-safe bowl and heat for 15 seconds. Drizzle of cake.