1 pkg. spice cake mix
1 c. buttermilk
1/3 c. applesauce
1/3 c. vegetable oil
3 eggs
1/4 tsp. cinnamon

Caramel Frosting:

1/2 c. (1 stick) butter, melted
1/2 c. light brown sugar
1/2 c. dark brown sugar
1/4 c. milk
2 c. confectioners' sugar
1 tsp. vanilla
Blackberry jam

Mix cake ingredients. Pour into two (9-inch) round greased and floured pans. Bake at 350°F for 25 to 30 minutes.

Mix frosting ingredients together except blackberry jam. Put blackberry jam between cake layers, then frost cake with caramel frosting.