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Slice of white sheet cake with a red handled fork

White Sheet Cake

5 from 2 reviews

For those times when you need a break from chocolate, this marvelous white chocolate sheet cake is the perfect recipe to feed a crowd. Adapted from Taste of Home





  1. Preheat oven to 375 degrees. Spray a 15 x 10-inch jelly roll pan with nonstick cooking spray. Set aside.
  2. In a large saucepan, bring butter and water to a boil. Remove from heat; by hand, stir in flour, sugar, eggs, sour cream,extracts, salt, and baking soda and mix by hand, until thoroughly combined and smooth.
  3. Pour into prepared pan. Bake for 15-22 minutes or until the cake is golden and a toothpick comes out clean, watching carefully so not to over-bake.
  4. Cool on a rack for 15 minutes before frosting
  5. Combine butter, and milk in a saucepan and bring to a boil. Immediately remove from the heat: whisk in powdered sugar and extract.
  6. Frost warm cake. Chill if you’d like to cut out festive shapes for a party theme.


Make sure to frost the cake before it is totally cooled or you will have difficulty spreading the icing.
I used an old insulated jelly roll pan and my cake to a little over 20 minutes to fully bake. Start checking with a toothpick or finger tap at 15 minutes as the baking time will vary depending on your pan and oven.