You can prepare cookie dough ahead of time and freeze. Before baking thaw the dough for 15 to 30 minutes until it can easily work on dough. Add any dry fruit or nuts according to your preference. Baking first batch cookies needs 20 minutes. For second batch it needs only 17 to 18 minutes. Do have an eye after 15 minutes of baking. Every oven behaves different ,so adjust the temperature during baking.