Ingredients
1/4 softened butter
1 cup white sugar
1 teaspoon baking soda
1/2 teaspoon salt
2 cups all-purpose flour
2 eggs, beaten
1 cup sour cream
3-1/2 to 4 cups diced rhubarb
Topping:
1/2 cup brown sugar
1/4 cup white sugar
1/4 cup butter, softened
1/4 cup all-purpose flour
1/2 tsp ground cinnamon
1/2 cup chopped walnuts
Preparation
Preheat the oven to 350 degrees. Grease and flour a 9x13 inch baking dish.
In a large bowl, mix together sugar & butter; add baking soda, salt and flour. Stir in the eggs and sour cream until smooth, then fold in the rhubarb. Pour into the prepared dish and spread evenly.
In a smaller bowl, mix together the first 5 Topping ingredients until crumbly. Sprinkle the mixture on top of the cake. Then sprinkle the chopped walnuts on top.
Bake in the preheated oven until a toothpick inserted in the center comes out clean, 45 minutes.
