The best Chocolate chip cookies

Chocolate Chip Cookies
1/2 cup shortening
1/2 cup butter
1 cup packed brown sugar
1/2 cup sugar
1/2 teaspoon baking soda
1/4 teaspoon salt
2 eggs
1 teaspoon vanilla
2 1/2 cup flour
1 1/2 cup semi sweet chocolate chips
1 cup chopped nuts (optional)

Preheat oven to 325. Beat shortening and softened butter together, on medium speed for 30 seconds, add brown sugar,sugar, baking soda. Beat until combined. Beat eggs, and vanilla together until combined. Beat as much of the flour as you can with your mixer. With a wooden spoon stir in remaining flour. Stir in chocolate chips, and nuts.

Form dough into small balls and place on pan, bake 8-10 minutes or until lightly brown.