Heat oven to 325F (if you're planning to bake the cookies now instead of freezing). Grease your cookie sheet.
Mix flour, soda and salt together.
Cream butter and sugars until well blended. Beat in vanilla, 1 egg and 1 egg yolk until light and fluffy.
Add dry ingredients (flour, soda and salt) and stir together until just blended. Stir in chocolate chips.
Roll into balls.
Place rolled dough balls on your greased cookie sheet into the freezer for 1 hour (or more). Pull it out and scrape them off with a spatula into a freezer ziploc. Return to the freezer where they can stay until you need them!
Place room temperature dough balls spaced 3 inches apart on greased cookie sheet. Bake at 325F for 15-17 minutes or until the edges are starting to brown. Cool on the sheet for a few minutes before transferring to a wire rack.
Place frozen dough balls onto greased cookie sheet. Bake at 325F for 17-20 minutes or until the edges are starting to brown. Cool on the sheet for a few minutes before transferring to a wire rack.
Adapted from Best Big, Fat, Chewy Chocolate Chip Cookies on All Recipes