Best Chocolate Chip Cookies

1/2 c. butter
1/2 c. margarine/shortening
3/4 c. brown sugar
3/4 c. sugar
2 eggs
1 tsp vanilla
2 1/2 c. flour
1 tsp baking soda
1 tsp salt
8 oz semi-sweet choc chips
1 c. chopped pecans (optional)

Blend butter and shortening, cream with sugars, add in eggs and vanilla and beat well. In a separate bowl blend flour, sugar and salt, add to creamed ingredients and mix well. Fold in choc chips and nuts. Make ice cream scoop size balls and space 2" apart on cookie sheet, bake at 350 for 10-12 minutes.