Using store-bought puff pastry is such a time saver! There are 4 tips to keep in mind when working with puff pastry. Do not unfold the puff pastry until it's fully thawed to avoid ripping a sheet. Flour your surface where you will be working to prevent the puff pastry from sticking. Puff pastry needs to be cooked in a hot oven. Do not overlook preheating the oven to 400° degrees. Work with puff pastry while thawed but still cold for best results.