The Food Timeline: cake history notes
2. Oil or spray a 13- x 9-inch baking pan (or whatever size is available). 3. In a mixing bowl, stir together flour, baking soda, cocoa, and salt. 4. In another mixing bowl, combine sugar, eggs, and oil. Beat until smooth. 5. Add beets and vanilla. Beat until smooth. 6. Gradually add dry ingredients, beating well after each addition. 7.