Can anyone convert this 16 serving recipe to a 20 serving recipe:
1. 1 cup salted butter* softened


2. 1½ cup white (granulated) sugar


3. 1 cup light brown sugar packed


4. 2 tsp pure vanilla extract


5. 2 large eggs


6. 3 cups all-purpose flour


7. 1 tsp baking soda


8. ½ tsp baking powder


9. 1 tsp sea salt


10. 2½ cups chocolate chips (or chunks, or chopped chocolate)