Chocolate Chip Cookies

I don't remember where I first got this recipe from. I have it on a recipe card now. The amounts in brackets are when I quadruple the batch in my huge Tupperware bowl (Thatsa Bowl). Then I roll the dough into balls, place them on a cookie sheet to freeze. Once frozen I put the balls into freezer bags so that whenever we want fresh-baked cookies, all we have to to is pull them out of the freezer, put them on a pan and stick them in the oven.

2 1/2 cups four (10 c)
1 teaspoon baking soda (4 tsp)
1/2 teaspoon salt (1 1/2 tsp)
1/2 cup butter/margarine (2 c)
1/2 cup shortening (2 c)
1 cup packed brown sugar (4 c)
1/2 cup sugar (2 c)
2 eggs (8)
1 1/2 teaspoons vanilla (2 Tb)
2 cups semi-sweet chocolate chips (5-6 c)
1 cup chopped walnuts or pecans optional (2 c)

Stir together flour, baking soda and salt. Beat together butter, shortening. Add brown sugar and sugar. Beat until fluffy. Add eggs and vanilla; beat well. Add dry ingredients - mix well. Stir in chocolate chips and nuts. Drop by teaspoon on ungreased cookie sheet. Bake 375° 8-10 minutes. Cool on wire rack.