Monster Chocolate Chip Cookies
["1/2 c. unsalted butter, at room temperature", "1/4 c. vegetable shortening, at room temperature", "1/2 c. light brown sugar, packed", "1/2 c. granulated sugar", "2 eggs", "2 tsp. vanilla extract", "1 1/2 c. all-purpose flour", "1/2 tsp. baking powder", "1/2 tsp. salt", "2 to 3 c. semi-sweet chocolate chips"]
["In mixing bowl (using a wooden spoon) or in the large bowl of an electric mixer, cream the butter and shortening together until well-blended and soft.", "Then beat in sugars in turn, beating well after each until fluffy.", "Add eggs, one at a time, beating well each time, then beat in vanilla."]
["unsalted butter", "vegetable shortening", "light brown sugar", "sugar", "eggs", "vanilla extract", "flour", "baking powder", "salt", "semi-sweet chocolate chips"]