How to Thaw? Thaw time may vary. Pastry should unfold easily but still be cold after thawing. At room temperature, thaw unwrapped pastry for no more than 40 minutes. In the microwave, wrap pastry in paper towel and microwave on HIGH for 15 seconds, then turn it over and microwave for another 15 seconds. If it doesn’t unfold easily, microwave for another 5 seconds on each side.