1 cup packed brown sugar 1 cup granulated Sugar; divided 2/3 cup vegetable oil 1 egg, beaten 1 cup buttermilk 1 tsp. vanilla extract 2 1/2 cups all-purpose flour 1 tsp. soda 1 tsp. salt 1 cup fresh chopped strawberries 1 cup fresh chopped rhubarb 1/2 cup chopped walnuts 1/4 cup butter or margarine
Preheat oven to 325 degrees. Grease 9x13 inch cake pan. Combine brown sugar, granulated sugar(1/2 cup), vegetable oil, egg, vanilla extract and buttermilk. Mix ingredients thoroughly. Stir together flour, soda, and salt and add to mixture. Stir until well blended. Add rhubarb, strawberries, and walnuts; pour into cake pan. Melt butter and spoon over top of cake. Sprinkle the remaining 1/2 cup sugar over cake as well. Bake 35-40 minutes. Serve warm or cold. Serve with whipped cream or vanilla ice cream if desired.