Mary's Chocolate Chip Cookies

Why I Love This Recipe
Mary was a coworker of mine many years ago. She used to bring these cookies often to work. When she quit, she left the recipe and they are the only chocolate chip cookies I make.
Ingredients You'll Need
2/3 cup butter or margerine
2/3 cup shortening
1 cup white sugar
1 cup brown sugar
2 eggs
2 tsp vanilla
3 cups flour
1 tsp salt
1 tsp. baking soda
12 oz chocolate chips
6 oz nuts(optional)
Directions
Cream together first 4 ingredients. Add eggs and vanilla.
Combine flour, salt and baking soda in separate bowl; mix together. Add chocolate chips and nuts. I chill batter to obtain plump cookies.
Place on lightly greased, or parchment paper lined cookie sheet.
Bake at 375 degrees F for 10-13 minutes. Makes 3-4 dozen cookies.