The Williams Sonoma Test Kitchen Three-Layer Vanilla Cake, Serves 8-10 is made with powdered sugar, butter, sugar, flour, eggs, egg yolks, sour cream, vanilla paste, baking powder, baking soda, and salt.
- Includes wheat flour and malted barley flour.
- Powdered sugar contains cane sugar and cornstarch.
- Sour cream is listed as cultured cream.
- Contains wheat, dairy, eggs, and soy.