Before you buy any pan, make sure it fits in BOTH your oven and your fridge.
1Make sure your cookie sheet doesn’t bend too easily. A non-stick surface is not necessary, but non-stick is a serious “nice-to-have” with cookie sheets. Make sure your cookie sheets don’t bend too easily.
2A sheet pan has a one-inch rim to prevent baked goods from slipping off into oven oblivion. Get a thick sheet pan. Thick bake-ware spreads the heat more evenly.
3You’ll need a deep baking pan for baking brownies and dishes like lasagna. Don’t forget to pick up two identical copies of this pan. You don’t want those brownie bottoms overcooked.