Williamsburg Orange Cake

2 3/4 C cake flour or 2 1/2 C all purpose flour
1 1/2 C sugar
1 1/2 tsp soda
1/4 tsp salt
1 1/2 C buttermilk
1/2 C butter or margarine, softened
1/4 C shortening
3 eggs (1/2 to 2/3 C)
1 1/2 tsp vanilla
1 C golden raisins cut up
1/2 C finely chopped nuts
1 Tbsp grated orange peel

Heat oven to 350 degrees Grease & flour baking pan, 13x9x2 inches or 29 inch or 3 8 inch round layer pans. Measure all ingredients into large mixer bowl. Blend 1/2 minute on low speed, scraping bowl constantly. Beat 3 minutes high speed, scraping bowl occasionally. Pour into pan (s).

Bake oblong 45-50 minutes, layers 30-35 minutes or until wooden pick inserted in center comes out clean. Cool; Frost cake with Williamsburg Butter Frosting