A slice of Thanksgiving leftover casserole featuring turkey, stuffing, mashed potatoes, cranberry sauce, and gravy.

Perfect Thanksgiving leftover casserole: 1 comforting bake

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Written by Caroline Hayes

November 11, 2025

Oh, that first meal after Thanksgiving? It’s almost as special as the big day itself, isn’t it? That glorious moment when you can take all those amazing flavors we love – the turkey, the stuffing, the creamy mashed potatoes – and turn them into something new and ridiculously comforting. That’s where my absolute favorite Thanksgiving leftover casserole comes in. Think of it as a warm, bubbly hug in a dish! Here at Recipes To Keep, we’re all about those classic American comfort foods that make a house feel like a home, and this casserole is proof that you don’t need a ton of fuss to create something truly special. It’s practical, it’s delicious, and it means less time in the kitchen when you’d probably rather be relaxing. You can read more about my passion for these kinds of recipes on my About page! Trust me, this is one recipe you’ll want to keep!

Why You’ll Love This Thanksgiving Leftover Casserole

Honestly, who has the energy to cook a whole new meal after Thanksgiving? That’s why this casserole is just the best! It’s like giving all your amazing leftovers a cozy second life. You get all those incredible Thanksgiving flavors – the savory turkey, the herby stuffing, those creamy mashed potatoes – all mixed together in one perfect, bubbly bake. It’s seriously the ultimate comfort food, and the best part? It’s ridiculously easy to put together. Just layer your favorites, pop it in the oven, and voilà! It’s a lifesaver for using up all that delicious food and means less time in the kitchen and more time relaxing. Trust me, it’s a keeper!

Ingredients for Your Thanksgiving Leftover Casserole

Okay, so for this amazing Thanksgiving leftover bake, you’re going to want to gather up a few things. Don’t stress if you don’t have *exactly* these amounts, use what you’ve got! That’s the beauty of using leftovers, right?

  • 4 cups mashed potatoes (your favorite kind, of course!)
  • 2 cups cooked turkey, shredded or diced (leftover turkey is perfect!)
  • 1 cup leftover gravy (this is key for moisture, so don’t skimp!)
  • 1 cup leftover stuffing (any kind works great!)
  • 1/2 cup leftover cranberry sauce (this is optional, but oh-so-good if you love that sweet-tart pop!)
  • 1/4 cup chicken broth or extra gravy (just in case things feel a little dry)
  • Salt and pepper to taste (always!)

Seriously, that’s it! Gather these up, and you’re halfway to a delicious post-holiday meal.

How to Make the Ultimate Thanksgiving Leftover Casserole

Alright, let’s get this post-Thanksgiving magic happening! Making this casserole is super simple, seriously. You’ll feel like a kitchen wizard without breaking a sweat. It’s all about layering those delicious flavors just right.

Preheating and Preparing the Base

First things first, get that oven humming! Preheat it to 350°F (175°C). Now, grab your shredded or diced turkey and mix it up with about a cup of your glorious leftover gravy. I like to add a little salt and pepper here, too. If your turkey mixture looks a bit sad and dry, don’t you worry – just stir in that extra bit of chicken broth or gravy we set aside. This Thanksgiving leftover casserole needs that moisture!

Layering Your Thanksgiving Leftover Casserole

Now for the fun part – building this masterpiece! Spread that moist turkey mixture evenly across the bottom of your baking dish. Think of it as the cozy foundation. Next, gently spoon the stuffing right over the turkey. If you’re feeling fancy and have some cranberry sauce leftover, spread a layer of that over the stuffing. It adds a delightful zing! Finally, top it all off with those beautiful mashed potatoes, making sure to cover everything below. You can even use a fork to make little swirls on top – makes it look extra special for your layered Thanksgiving bake!

Baking and Resting Your Holiday Leftovers Strata

Pop that beauty into the preheated oven and let it bake for about 25 to 30 minutes. You’re looking for everything to be nice and bubbly, and the top to get just a little bit golden brown. Once it’s out, resist the urge to dig in right away! Let this wonderful holiday leftovers strata sit for about 5 to 10 minutes. This helps it set up perfectly so every bite is a delicious mix of all those layers.

Tips for the Perfect Thanksgiving Leftover Casserole

You know, making this Thanksgiving leftover casserole is pretty forgiving, but I’ve picked up a few tricks over the years to make it extra special! A little something here or there can make all the difference, especially when you’re dealing with those precious holiday leftovers. It’s kind of like making a Shepherd’s Pie, but with all the best Thanksgiving goodies!

Moisture Management for Your Thanksgiving Leftover Casserole

The biggest thing to watch out for is dryness! Gravy is your best friend here. If your gravy seems super thick, just whisk in a tablespoon or two of chicken broth or even a little extra turkey drippings. This helps keep the whole Thanksgiving leftover casserole wonderfully moist and prevents anything from getting tough. Nobody wants a dry leftover bake!

Adding Extra Layers and Flavor

Don’t be afraid to jazz it up! If you have leftover veggies like green beans or corn, tuck them in there as another layer. A sprinkle of dried herbs like thyme or sage into the turkey mixture or mashed potatoes can really boost the thanksgiving flavor, too. It makes your green bean casserole or brussels sprouts taste right at home!

Achieving a Crispy Topping

For that beautiful golden-brown crust, you’ve got a couple of options. Baking it uncovered usually does the trick! If you’re like me and love a little *extra* crisp on top, you can pop it under the broiler for just a minute or two at the very end. Keep a close eye on it though – it can go from golden to burnt in a flash!

Frequently Asked Questions about Thanksgiving Leftover Casserole

Got questions about this glorious Thanksgiving leftover casserole? I totally get it! It’s a fantastic way to use up all those goodies, and I’m happy to dish out a few tips.

Can I use fresh ingredients instead of leftovers?

Absolutely! While it’s designed for leftovers, you can totally make this work with fresh ingredients. Cooked shredded turkey (like from a roasted turkey breast), homemade stuffing, fresh mashed potatoes, and your favorite gravy will be delicious. You’ll just need to prepare those components beforehand!

How do I store and reheat this Thanksgiving leftover casserole?

Keep cooled leftovers stored in an airtight container in the fridge for up to 3 days. Reheat gently in the oven at 325°F (160°C) until warmed through, or pop individual portions in the microwave. You might want to add a splash more gravy when reheating to keep it moist!

Can I make this Thanksgiving leftover casserole ahead of time?

You sure can! Assemble the whole layered Thanksgiving bake (but don’t bake it yet!), cover it tightly, and keep it in the refrigerator for up to 24 hours. You might need to add an extra 10-15 minutes to the baking time when you’re ready to cook it.

Nutritional Information

Just a heads-up, these numbers are estimates since we’re working with leftovers and everyone’s Thanksgiving spread is a little different! This holiday leftovers strata is packed with flavor and pretty satisfying.

  • Serving Size: 1 serving
  • Calories: 450
  • Fat: 20g
  • Saturated Fat: 7g
  • Trans Fat: 0g
  • Cholesterol: 90mg
  • Sodium: 700mg
  • Carbohydrates: 40g
  • Fiber: 4g
  • Sugar: 8g
  • Protein: 25g

It’s a good, hearty meal that gives you a taste of everything!

Share Your Thanksgiving Leftover Masterpiece!

I just love hearing from you all! Did you make this amazing Thanksgiving leftover casserole? I bet it turned out wonderfully! Drop a comment below, tell me how it went, or even share your own twist. You can also connect with me on Facebook or reach out via my contact page. Your kitchen stories make this all so much fun!

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Thanksgiving Leftover Casserole

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A comforting casserole that layers all your favorite Thanksgiving leftovers into one easy, baked dish.

  • Author: Caroline Hayes
  • Prep Time: 15 min
  • Cook Time: 30 min
  • Total Time: 45 min
  • Yield: 6 servings 1x
  • Category: Main Course
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

Scale
  • 4 cups mashed potatoes
  • 2 cups cooked turkey, shredded or diced
  • 1 cup leftover gravy
  • 1 cup leftover stuffing
  • 1/2 cup leftover cranberry sauce (optional)
  • 1/4 cup chicken broth or extra gravy
  • Salt and pepper to taste

Instructions

  1. Preheat your oven to 350°F (175°C).
  2. In a bowl, mix the shredded turkey with 1 cup of gravy, salt, and pepper. If the mixture seems dry, add the chicken broth or extra gravy.
  3. Spread the turkey mixture evenly in the bottom of a 9×13 inch baking dish.
  4. Layer the stuffing over the turkey mixture.
  5. If using, spread the cranberry sauce over the stuffing.
  6. Top with the mashed potatoes, spreading them evenly to cover the layers below. You can create a decorative pattern with a fork if desired.
  7. Bake for 25-30 minutes, or until the casserole is heated through and the top is lightly browned.
  8. Let stand for 5-10 minutes before serving.

Notes

  • Ensure your gravy is not too thick; thin it with a little broth if needed to prevent the casserole from drying out.
  • You can add other leftover vegetables, like green beans or corn, as an additional layer.
  • For a crispier top, you can broil the casserole for the last 1-2 minutes, watching carefully to prevent burning.

Nutrition

  • Serving Size: 1 serving
  • Calories: 450
  • Sugar: 8g
  • Sodium: 700mg
  • Fat: 20g
  • Saturated Fat: 7g
  • Unsaturated Fat: 13g
  • Trans Fat: 0g
  • Carbohydrates: 40g
  • Fiber: 4g
  • Protein: 25g
  • Cholesterol: 90mg

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Caroline Hayes is the heart and soul behind Recipes To Keep. Inspired by her grandmother's overflowing recipe box from rural Ohio, Caroline has dedicated herself to preserving timeless American classics. She is a passionate home cook and recipe archivist who specializes in testing and perfecting cherished dishes for the modern kitchen. Her goal is to ensure every recipe is a "keeper"—reliable, delicious, and ready to become a part of your family's story.

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