Baking time can be the difference of a gooey or a crispy cookie. I like to bake mine crispy on the edges and gooey in the center. So, you bake for the minimum time below. But if you are a crisp all the way through, do the longer time. Also, each oven/altitude/climate can change your bake, so keep your eyes on the oven and bake to your liking. If your cookies are frozen, they may need an additional 1-3 minutes of baking time. I also check on mine to make sure the edges are brown and I use a spatula to make sure I can pick up the edges.