Cookies taste best when eaten within two weeks of arrival.
Brownies are best when refrigerated or frozen.
Some tips if you have to save some cookies for later: never refrigerate - they dry out, store in an airtight container with a piece of white bread, may be frozen in an airtight bag.
Thawed cookies can be warmed in the microwave for up to 10 seconds or a 375 degree oven for 1-2 minutes.
Frozen cookies can be warmed in the microwave for 20-30 seconds or a 375 degree oven for 1-3 minutes.