1 Cup shortening
2 Cups sugar
4 eggs
2 Cups flour
1 teaspoon baking powder
1/2 teaspoon salt
2 Cups chopped nuts
1 1/2 teaspoons vanilla
2 Squares baking chocolate, melted (for marble layer)
Grease and flour 9X13 baking pan and preheat oven to 300 degrees F.
Cream shortening in a large mixing bowl, gradually adding sugar. Beat in eggs one at a time beating after each addition. Sift in the flour, baking powder, and salt, then add to batter, mixing constantly. Stir in nuts and vanilla.
Divide dough into two equal parts. Pour one portion into baking pan. To remaining portion, blend in the melted chocolate; then pour over light layer in pan and for marbled effect swirl several times with a spatula. Bake for 45-55 minutes.