It will still work, make sure you warm it up before you try and use it. It might not be so puffy as normal, but worth a shot? Puff pastry doesn’t get it’s puff from raising agent but from layers of fat. Texture wise, it’s probably fine, but I’d expect it to taste a bit rancid.Click to see full answer. Also, can you eat expired puff pastry?Is frozen puff pastry safe to eat after the expiration date on the package? If dry spots or discoloration have developed on the frozen puff pastry, freezer burn has begun to set in – this will not make the puff pastry unsafe to eat, but it will harm the texture and taste.Also, how can you tell if puff pastry has gone bad? If it smells fine and looks fine then it is fine. Date is to keep the manufacturers safe. Yeah, it’s fine unless it really smells, just make sure it’s properly cooked through. I made a pie with puff pastry that was going slimy. Keeping this in view, how long can you keep puff pastry in the fridge? Unbaked puff pastry dough may be wrapped tightly in plastic wrap and stored in the refrigerator for 2 or 3 days or frozen for up to 1 month. Baked filled pastries are best enjoyed the day they are made and don’t refrigerate well. Baked unfilled pastry may be frozen in airtight containers for up to 6 weeks.Why did my puff pastry not puff?One of the most common reasons that your puff pastry didn’t rise is the baking temperature. Puff pastry needs to be baked in a very hot oven of about 400 degrees. This high heat is necessary to create enough steam in the oven, so the dough rises.