How to store: Store chocolate chip cookie bars in an airtight container or wrap them individually in plastic wrap. Eat within 4 days if stored at room temperature, and within 7 days if stored in the fridge.

How to freeze: You can also freeze chocolate cookie bars for up to 3 months. Let them cool completely first, then slice and store in an airtight container or freezer bag. To thaw, leave them in the fridge overnight.

Make ahead instructions: You can make the chocolate chip cookie dough up to 2-3 days in advance. Cover the bowl with plastic cling wrap when storing. When ready to bake, allow the dough to come to room temperature (about 20 minutes) before spreading onto the prepared baking pan.

How to freeze cookie dough: You can also freeze the cookie dough by rolling it into a ball and wrapping tightly in plastic cling wrap and placing inside a freezer bag. Freeze for up to 3 months. When ready to bake, allow the cookie dough to thaw overnight in the refrigerator, and allow it to come to room temperature before baking, according to recipe instructions.

How to serve a crowd: You can double this recipe to serve more people easily. Just substitute the pan for a rectangular 9x13-inch baking pan, and instead of baking for 30-35 minutes, bake for 35-45 minutes.