Old Fashioned Jam Cake

1 cup butter
1 cup sugar
1-1/2 cups blackberry jam
1-1/2 cups strawberry jam
5 egg yolks
1 tablespoon soda
1/2 teaspoon salt
1 cup buttermilk
3 cups all-purpose flour
1 tablespoon ground cinnamon
1 tablespoon ground allspice
5 egg whites, beaten
1 cup finely chopped nuts

Cream butter and sugar until light. Add egg yolks, one at a time, beating well after each addition. Add jam and beat well. Add sifted flour, soda, salt, cinnamon, allspice and egg whites alternately with buttermilk, beating until smooth, beginning and ending with dry ingredients. Stir in nuts.

Pour into sheet cake pan lined on the bottom with greased wax paper. Bake in preheated oven at 325 F for about 35 minutes. Cool. Spread Caramel Frosting between layers and on top of cake.

Caramel Frosting
2 cups firmly packed light brown sugar
1 cup sugar
2 tablespoons light corn syrup
3 tablespoons butter
Dash of salt
1/3 cup cream
1 teaspoon vanilla extract

Place all ingredients in a saucepan. Bring to a boil, cover, and cook for 3 minutes. Uncover and cook to 236 F. using a candy thermometer or until a small amount of mixture forms a soft ball when dropped into cold water. Cool for 5 minutes then beat until thick. If too stiff, add a little hot water.