Marble Chiffon Cake

This confection's a proven winnerit earned LuAnn Heikkila a blue ribbon and was named Division Champion at the county fair in her hometown of Floodwood, Minnesota! "It's our favorite," she adds. "I'm the third generation in the family to make it."LuAnn Heikkila, Floodwood, Minnesota
12-16 ServingsPrep: 15 min. + standing Bake: 1 hour + cooling
Ingredients
- 7 eggs, separated
- 2 ounces unsweetened chocolate
- 1-3/4 cups sugar, divided
- 1/4 cup hot water
- 2 cups all-purpose flour
- 2 teaspoons baking powder
- 1 teaspoon salt
- 1/4 teaspoon baking soda
- 3/4 cup water
- 1/2 cup canola oil
- 2 teaspoons vanilla extract
- 1/2 teaspoon cream of tartar
- FROSTING:
- 4 ounces semisweet chocolate
- 1 tablespoon butter
- 7 tablespoons heavy whipping cream
- 1 teaspoon vanilla extract
- 1-1/2 cups confectioners' sugar
Directions
- Let eggs stand at room temperature for 30 minutes. In a small
- saucepan, melt unsweetened chocolate over low heat. Add 1/4 cup
- sugar and hot water; mix well and set aside.
- In a large bowl, combine the flour, baking powder, salt, baking soda
- and remaining sugar. Whisk together the egg yolks, water, oil and