Store in tightly covered container up to 1 week.
How to Freeze Cookies and Brownies
Get a headstart on holiday baking (or any big baking occasion)! Bake multiple batches of cookies or brownies in advance and store them in the freezer. Cool cookies completely, wrap tightly in plastic wrap and place in airtight container or freezer-weight resealable plastic bag. Freeze up to 1 month. Thaw at room temperature. For best results, freeze uncut brownies and bar cookies. Cool completely, wrap tightly in plastic wrap, then wrap again in foil. Freeze up to 3 months. Thaw at room temperature before cutting into bars to serve.