Yes, you can safely freeze and reheat fish pie, whether it’s uncooked or already baked — just follow proper storage and reheating methods to preserve texture and flavor.
Can you reheat fish pie once cooked?
Yes, you can reheat cooked fish pie safely — just ensure it’s heated through thoroughly and reaches at least 165°F (74°C) internally.
Reheating fish pie is simple if you take it slow. The USDA suggests getting leftovers steaming hot all the way through to wipe out any lurking bacteria. A microwave gets it done fast, but nothing beats the oven or air fryer for bringing back that golden crust. Skip the slow cooker — it won’t get hot enough to do the job right.
What is the best way to reheat fish pie?
For best results, reheat fish pie in a 350°F (175°C) oven until piping hot, about 20–25 minutes, covered with foil for the first part and uncovered to crisp the top.
Microwaving works in a pinch — just use 50–70% power and zap it in 1-minute bursts, stirring between rounds to dodge dry spots. Want that just-served feel? Pop the pie on a baking sheet, loosely tent with foil, and bake at 375°F (190°C) until bubbly. For the last 2–3 minutes, slide it under the broiler to revive that mash topping, but keep an eye on it so it doesn’t scorch. If you're reheating a similar dish, check out how to reheat fish fingers for another seafood option.
Does fish pie freeze well?
Yes, fish pie freezes well for up to 3 months when properly wrapped and cooled.
Freezing locks in freshness, but the trick is letting the pie cool completely first — otherwise you’ll end up with ice crystals and freezer burn. The USDA says properly wrapped cooked dishes stay at their best for about 2–3 months in the freezer. Skip pies with super watery fillings; the sauce can separate a bit when you thaw it. For more on freezing prepared meals, see freezing cooked hot dogs as another example.
How do you store leftover fish pie?
Store leftover fish pie in the fridge for up to 4 days in an airtight container or tightly wrapped with plastic and foil.
Need to keep it longer? Wrap individual slices in plastic and foil, then freeze for up to 3 months. Thaw them overnight in the fridge before reheating. Never leave fish pie out for more than 2 hours — seafood spoils fast according to the CDC.
How long do you reheat fish pie for?
Reheat fish pie for 20–25 minutes in a 350°F (175°C) oven, or 3–5 minutes in the microwave on medium power until steaming and bubbly.
Always confirm the center hits 165°F (74°C) with a food thermometer. If the top looks soggy, broil it uncovered for 1–2 minutes to crisp it back up. Don’t overdo it — too much heat dries out the fish and turns the mash gluey. For reheating grains alongside your pie, learn how to reheat cooked rice properly.
How long can I keep cooked fish pie in the fridge?
Cooked fish pie stays fresh in the fridge for 3 to 4 days when stored properly in an airtight container.
Cool the pie within 2 hours of cooking and get it into the fridge ASAP. Seafood dishes spoil quickly, so don’t push your luck. When in doubt, give it a sniff — any sour or funky odor means it’s time to say goodbye per CDC guidelines. If you're curious about other frozen foods, read about freezing cakes for comparison.
How many times can I reheat fish pie?
You can safely reheat fish pie multiple times, but it’s best to reheat only once to preserve texture and prevent foodborne illness.
Each reheat makes the fish drier and the sauce thinner. If you must reheat more than once, split the pie into small portions and let it cool between heatings. Always bring it back to 165°F (74°C) and toss it if it smells or looks off.
Can you eat fish pie cold the next day?
Yes, you can eat fish pie cold the next day, but it will be less creamy and the fish may taste drier.
Cold fish pie is safe if it spent less than 2 hours at room temperature after cooking and lived in the fridge ever since. The flavors are still decent, especially if the pie has a rich sauce and well-seasoned fish. For the real deal, warm it gently to restore that creamy texture and crisp top. If you're wondering about other cold foods, check out freezing basics to understand temperature effects.
Do you have to defrost fish pie before cooking?
No — you can bake fish pie directly from frozen, but it will take about 50% longer than a thawed pie.
Wrap the frozen pie in foil and bake at 325°F (160°C) for about 1.5 hours, then remove the foil and bake another 15–20 minutes to crisp the top. Or thaw it overnight in the fridge first. Baking from frozen is fine, but don’t cram the oven — it needs room to heat evenly. For more on freezing prepared meals, see freezing stuffed peppers as another example.
Can you freeze salmon pie?
Yes, you can freeze salmon pie for up to 3 months, whether baked or unbaked.
Wrap it tight in plastic and foil, or stash it in a freezer-safe container. When you’re ready to bake, thaw it overnight in the fridge, or go straight from frozen and tack on 20–30 minutes to the cook time. Salmon holds up better than delicate white fish after thawing, so it freezes like a champ.
Can you microwave fish pie from frozen?
Yes, you can microwave fish pie from frozen, but allow 6–8 minutes on high, stirring and checking every 2 minutes.
Use a microwave-safe dish and cover it loosely to trap steam. Flip the portions halfway so everything heats evenly. The texture won’t be as crisp as oven-reheated pie, but it’s a fast fix. Double-check the center hits 165°F (74°C) before digging in.
Edited and fact-checked by the FixAnswer editorial team.
