The Best Chocolate Chip Cookies
["2/3 c. shortening", "3 c. flour", "2/3 c. softened margarine", "1 c. sugar", "1 c. brown sugar", "1 c. chopped nuts (optional)", "1 tsp. soda", "1 tsp. salt", "2 eggs", "2 tsp. vanilla", "12 oz. pkg. semi-sweet chocolate pieces"]
["Heat oven to 350\u00b0.", "Mix shortening, butter, sugars, eggs and vanilla.", "Blend in remaining ingredients.", "(For a softer, rounder cookie, add 1/2 cup flour.)", "Drop onto an ungreased cookie sheet. Bake 8 to 10 minutes, until light brown."]
["shortening", "flour", "margarine", "sugar", "brown sugar", "nuts", "soda", "salt", "eggs", "vanilla", "semi-sweet chocolate pieces"]