To ensure that cookies don't stick to a cookie sheet, you can follow these tips:
Use parchment paper or silicone baking mats: Line your cookie sheet with parchment paper or a silicone baking mat. These non-stick surfaces create a barrier between the cookie dough and the sheet, preventing sticking.
Grease the cookie sheet: If you don't have parchment paper or baking mats, you can lightly grease the cookie sheet with cooking spray, butter, or vegetable oil. Be sure to distribute the grease evenly to prevent pooling, which can cause uneven baking.
Allow the cookie sheet to cool: Before placing another batch of cookies on the sheet, make sure it has cooled completely. Rapid temperature changes can cause the cookies to stick.
Use the right temperature: Follow the recipe's instructions for baking temperature. Higher temperatures can cause cookies to spread too quickly and stick to the sheet.
Don't overcrowd the cookie sheet: Leave enough space between each cookie dough ball. As cookies bake, they spread, and overcrowding can cause them to stick together.
Use a metal spatula or cookie lifter: Once the cookies are baked, use a thin metal spatula or cookie lifter to carefully lift them off the sheet. Be gentle to avoid breaking the cookies.
Allow cookies to cool completely: Let the cookies cool on a wire rack before storing or serving them. This helps them firm up and reduces the risk of sticking.
By employing these tips, you should be able to prevent cookies from sticking to your cookie sheet and achieve delicious, evenly baked treats.