Sunday Treat Chocolate Cake

2 cups flour
3 eggs
1 1/2 cups sugar
1 1/2 cups buttermilk
1/2 cup unsweetened cocoa powder
1/2 cup shortening
1 tsp. baking soda
1 tsp. vanilla
1 tsp. baking powder
1/2 tsp. salt 

Preheat oven to 350 F.  Grease and flour 2 9 inch round pans, set aside.  In bowl combine flour, sugar, cocoa, baking powder, baking soda and salt. Add eggs, buttermilk, shortening and vanilla. Beat for 2 minutes on high speed. Pour into prepared pans, baking 25 to 30 minutes until wooden pick inserted in center comes back clean. Cool in pans on rack for 15 minutes, remove pans, cool completely. Frost with sour cream chocolate frosting.