Heat oven to 350°. Grease 13 x 9 pan. Blend dry ingredients together in a bowl. Add shortening, water, and applesauce, beat with mixer for 2 minutes on medium speed. Add eggs, beat 2 more minutes. Scrape bowl. Stir in extras if using, and pour into pan. Bake for 45-50 minutes, or until toothpick inserted in the center comes out clean.