3/4 c. butter
3/4 c. Crisco
1 c. sugar
1 c. brown sugar
2 eggs
2 tsp. vanilla
1 tsp. baking soda
1 tsp. salt
3 c. flour
2 c. or more semi-sweet chocolate chips

Preheat oven to 350 degrees. Mix butter, Crisco, sugars, eggs, and vanilla. Add flour, one cup at a time, and mix well. Drop by oversized teaspoonfuls on cookie sheet and bake 8-10 minutes (they may seem under-cooked) for chewy cookies; cook longer for crispier cookie. Let sit for 1-2 minutes, then remove from cookie sheet to cool.