Celery freezing tricks? Storing: Leftovers with cooked meat or chicken can be stored in the freezer for 2 to 6 months. Egg-containing casseroles are best eaten within 2 to 3 months. For a more comprehensive list of cold food storage, check out this list put together by the U.S. Food and Drug Administration’s Food Safety and Inspection Service. In some cases, your frozen food items can be used straight from the freezer. Those frozen bananas and berries can go straight into a smoothie or shake. In other cases, though, you’ll need to plan ahead and properly defrost and thaw food before working with it—especially when it comes to working with raw meat.

Assemble casseroles in freezer-safe and ovenproof dishes (glass and ceramic dishes tend to work best) and seal with several layers of plastic wrap and foil, or with an airtight lid to keep out as much air as possible. For the best defrosting results, thaw them in the refrigerator overnight, then cook in the oven. Of course, if you forget to thaw and want to bake from frozen, make sure you freeze your casseroles in freezer-to-ovenproof baking dishes (such as foil, as most glass or ceramic dishes will crack). Don’t forget to remove any plastic wrap on your casseroles before baking (yes, I’ve done that!).

Sour Cream – This one changes consistency, so it’s best to bake or cook with when thawed. It probably won’t make the best topping for your tacos, but it would taste delicious in a casserole! Ricotta Cheese – Be mindful that this also changes consistency. However, there are so many ways to use ricotta cheese after it’s thawed! Lasagna roll ups, anyone? Cream Cheese – This is one that can change consistency. But if you thaw it slow and steady in the fridge, you’ll get the best result! Try to plan ahead when you want to use frozen cream cheese. Cheese, Sliced or Shredded – It’s always great to have cheese on hand! While you can freeze a whole block of cheese, we wouldn’t suggest doing that since it’s hard to use once you thaw it. Slice or shred it before you freeze to make it more convenient for meal prep. Find more details at Can You Refreeze Chicken.

Don’t: Let Leftovers Sit Out Before or After Freezing A common misconception is that any bacteria in leftovers will be killed by freezing. Unfortunately, that’s not the case, Wu says. “Many foodborne microbes can withstand freezing and pose a problem later when the food is thawed, especially if it’s not subsequently cooked sufficiently,” says Wu. “This is why, for example, not every fish can become sushi fish.” The U.S. Food & Drug Administration also points out that it’s unsafe to let food thaw at room temperature because bacteria can multiply rapidly and create toxins that will survive the cooking process — even if the food is cooked to temperatures that kill the bacteria themselves.