Alternate adding sour cream and dry ingredients until all are mixed into batter. Add in the rhubarb and fold into batter until well combined.
1 cup sour cream, 2 cups chopped rhubarb
Pour into baking dish and spread evenly. The batter will be thick, but don't worry, the rhubarb makes this cake nice and moist. Lightly sprinkle with a touch of sugar. Bake for 40-50 minutes, until the top is golden brown and a toothpick comes out clean.