Greeny's Chewy Chocolate Chip Cookies

1
In a medium bowl, stir flour with baking soda and salt; set aside.
2
In large mixing bowl, cream butter and shortening with sugar, brown sugar, eggs, and vanilla.
3
Preheat the oven to 350 degrees F.
4
Gradually blend dry mixture into creamed mixture. Stir in chocolate chips.
5
Drop by tablespoon (I use a cookie scoop) onto parchment-lined cookie sheets.
6
Bake for 9-11 minutes (I bake for 10 to start, and as the last few sheets go in, I lessen it to 9 1/2 minutes. I would say if you're going to bake them for 9, let them cool for longer on the cookie sheet before removing them to the wire rack).
7
Cool completely on a wire rack before storing in an airtight container.
8
To make bar cookies, pat the dough down into a 9x13 pan, and bake at 350 degrees F for 30 minutes.