Best 20 Leftover Casserole Recipes

LEFTOVER POT ROAST CASSEROLE

Steps:

• Preheat the oven to 425 degrees F (220 degrees C). Grease an 8x8-inch baking dish.
• Melt 1/2 tablespoon butter in a skillet. Add carrots, onion, and celery; cook until tender, 5 to 8 minutes. Add pot roast.
• Mix boiling water and 1 tablespoon butter in a bowl until butter is melted. Mix in milk, potatoes and the envelope of sauce mix from the box. Add pot roast mixture and stir until combined. Pour into the prepared baking dish.
• Bake in the preheated oven until potatoes are fork-tender, 30 to 40 minutes. Remove from the oven and let sauce thicken for 5 minutes before serving.

LEFTOVER MEATLOAF CASSEROLE

Steps:

• Bring a large pot of lightly salted water to a boil; cook the rotini at a boil until tender yet firm to the bite, about 8 minutes.
• Preheat the oven to 350 degrees F (175 degrees C).
• While pasta cooks, mash meatloaf in a 2 1/2-quart casserole dish. Add corn and mix.
• Combine tomato sauce, Italian seasoning, basil, oregano, onion powder, garlic powder, salt, pepper, and sugar in a bowl. Stir well.
• Drain pasta and add to the meatloaf mixture in the casserole dish. Mix in tomato sauce mixture. Top with Parmesan cheese, bread crumbs, and Cheddar cheese.
• Bake in the preheated oven until bubbly, 30 to 45 minutes.

LEFTOVER MEAT & POTATO CASSEROLE

Steps:

• Fry the onions in a hot dry skillet, sprinkle with the sugar or sweetener and cook until the onions start to brown. Add margarine and cook until they are tender, stir occasionally.
• Remove from heat.
• Spray a shallow baking dish with veggie oil and spread half the mashed potatoes on the bottom, then the meat, onions, peas and gravy. Cover with the remaining mashed potatoes, sprinkle with the Parmesan. Bake in a 375 F oven for 35 minutes. Sprinkle with paprika and serve.

LEFTOVER TURKEY CASSEROLE

Steps:

• Preheat oven to 350 degrees F (175 degrees C).
• Prepare stuffing according to package directions.
• In a medium bowl, mix the sour cream, cream of mushroom soup, cream of celery soup and dry onion soup mix.
• Spread the green beans in a 9x13 inch dish. Top with a layer of turkey. Pour the soup mixture over the turkey. Top with stuffing.
• Bake in the preheated oven 30 minutes, or until browned and bubbly.

LEFTOVER TURKEY AND STUFFING CASSEROLE

Steps:

• Preheat the oven to 350 degrees F. Spray a 9-by-13-inch baking dish with cooking spray.
• Whisk together the eggs, milk, 1 teaspoon salt and 1 teaspoon pepper in a large bowl. Stir in the Turkey Gravy and hot sauce. Spread the Cornbread Stuffing in the prepared baking dish, then sprinkle over the Roasted Vegetables and Roasted Turkey Breast. Pour the egg mixture over the top. Bake until golden brown and set, 35 to 40 minutes. Let cool for 5 minutes before slicing. Garnish with the cranberry sauce, if using.
• Melt the butter in a skillet over medium heat. Whisk in the flour and cook until golden, 1 to 2 minutes. Whisk in the warmed stock. Bring to a simmer and cook, stirring constantly, until thickened, 10 to 15 minutes. The mixture should coat the back of a spoon. Pour in the wine, stir and cook for an additional 2 to 3 minutes. Season to taste with salt and pepper.
• Preheat the oven to 350 degrees F.
• Melt the coconut oil over medium heat in a large skillet. Saute the onion, celery and carrots until tender, 8 to 10 minutes. Remove from the heat and put into a large bowl. Add the cornbread croutons, seasoned croutons, thyme, rosemary, sage and cayenne if using. Add the chicken stock and stir to combine. Taste and add salt and pepper, then stir in the eggs. Mix to combine and pour into a 9-by-13-inch casserole dish. Bake until golden brown and fluffy but still moist, 45 to 55 minutes.
• Preheat the oven to 400 degrees F.
• Put the squash, beets, onions and thyme in a large bowl. Drizzle with oil and toss to coat. Season generously with salt and pepper. Spread in a single layer on a rimmed baking sheet and roast, tossing once, until golden brown and tender, 45 to 50 minutes.
• Preheat the oven to 375 degrees F.
• Add 1 tablespoon of the coconut oil to a 6-inch cast-iron skillet. Put the skillet in the oven and allow to heat until very hot, 6 to 8 minutes.
• Combine the cornmeal, flour, baking powder and 1 teaspoon salt in a large bowl with a whisk. In a different bowl, combine the almond milk, applesauce, sorghum, egg and 2 tablespoons coconut oil. Make a well in the center of the dry ingredients and pour in the wet. Fold to combine.
• Carefully remove the skillet from the oven and pour in the batter. Return the skillet to the oven and bake until golden with a crisp crust, 25 minutes. Let cool before cutting the cornbread into 1-inch pieces (about 8 cups).
• Reduce the oven to 350 degrees F.
• Grease a baking sheet with some coconut oil and spread the cornbread in a single layer. Be careful, the cornbread is fragile and you dont want to be rough with it. Drizzle lightly with the remaining 2 tablespoons coconut oil and sprinkle with salt and pepper. Cook, stirring halfway through, until golden brown and crunchy, 30 to 40 minutes. Cool on the baking sheet before using.

LEFTOVER TURKEY & STUFFING CASSEROLE

Steps:

• Spray the bottom of a 9x13 baking dish, cover the bottom of dish with stuffing.
• Place turkey and mixed vegetables.
• In a separate bowl, mix soup, cream, onions, yogurt and 1/2 of the cheese.
• Pour over the veggie and turkey layer.
• Sprinkle the rest of the cheese over the top.
• Sprinkle more of the stuffing -- dotting over the top -- .

LEFTOVER LAMB CASSEROLE

Steps:

• Sauté 2 medium onions, cut in thin slices, in 3 tablespoons butter until delicately browned. Combine with 1 1/2 cups diced cold lamb, 1 cup leftover lamb gravy or canned beef gravy, 1 clove garlic, finely chopped, 2 cups cooked rice and 1/4 cup chopped parsley. Correct the seasoning and bake, covered, at 350°F for 45 minutes.
• Delicious served with butter French peas and sliced ripe tomatoes with dill dressing. For dessert, oven-baked apples with raisins and honey with sour cream.

WILD RICE AND LEFTOVER TURKEY CASSEROLE

Steps:

• Preheat oven to 350 degrees F (175 degrees C).
• Mix cream of mushroom soup, water, turkey, wild rice, milk, and onion together in a 2-quart casserole dish. Cover dish with aluminum foil.
• Bake in the preheated oven for 50 minutes. Remove foil and cook until rice is tender and liquid is absorbed, 10 to 15 minutes more.

"LEFTOVER ROAST" MEXICAN CASSEROLE

Steps:

• Shred cooked meat and remove any bones or fat.
• Heat oil in a large skillet. Add onion and pepper and saute until tender.
• Add all ingredients except corn tortillas and cheese. Stir together.
• Bring to a boil. Reduce heat to medium or medium-low and boil for one hour, allowing most of the liquid to cook off. Watch and reduce heat if necessary.
• Preheat oven to 350.
• Spray a 9x13 pan with non-stick spray.
• Place 3 corn tortillas in the bottom of the pan, tearing to fit.
• Spoon 1/3 of the meat mixture over the tortillas. Spread to cover.
• Sprinkle with 1/3 of the cheese.
• Repeat steps 7-9 two times.
• Bake at 350 for 30 minutes.
• **Can also be refrigerated in the morning and baked later that day. I haven't tried to freeze it yet.

THANKSGIVING LEFTOVER CASSEROLE

Steps:

• Preheat oven to 350 degrees F (175 degrees C). Lightly grease a 9x13 inch baking dish.
• Melt 3 tablespoons butter in a saucepan over low heat. Blend in the flour. Slowly stir in evaporated milk and water, then season with salt, pepper, and onion powder. Stir sauce over low heat for 5 minutes.
• In a separate saucepan over low heat, melt 2 tablespoons butter. Blend in the dry stuffing mix. Place the turkey in the prepared baking dish. Pour the sauce over turkey, then sprinkle with Cheddar cheese. Spread mashed potatoes over cheese. Top mashed potatoes with the stuffing mixture.
• Bake 45 minutes in the preheated oven.

LEFTOVER MEATLOAF TATER TOT CASSEROLE

Steps:

• Preheat an oven to 350 degrees F (175 degrees C). Grease a 9x13-inch baking dish.
• Combine the cream of mushroom soup, cream of chicken soup, sour cream, seasoned salt, and pepper. Stir in the mixed vegetables and onion. Add the tater tots and stir until they are coated with the mixture. Pour into the prepared baking dish. Press the meatloaf slices into the top of the tater tot mixture.
• Bake in preheated oven 15 minutes; sprinkle the Cheddar cheese over the top, and bake 35 minutes until the cheese browns. Remove from the oven and let stand 10 minutes before serving.

LEFTOVER TURKEY CASSEROLE

Steps:

• Heat oven to 350 degrees F.
• In a 9 x 13-inch pan or large oven-safe casserole dish (or whichever size is appropriate if you don't have as many leftovers), spread the mashed potatoes in the bottom of the pan, layer meat and vegetables over the potatoes.
• Spread gravy over the top, and then top with leftover stuffing. If you don't have stuffing leftover, or don't care for it, you can put the mashed potatoes on top of the casserole to make a crust.
• Bake for approximately 30 minutes or until hot.

LEFTOVER HAM -N- POTATO CASSEROLE

Steps:

• Place potatoes into a large pot and cover with salted water; bring to a boil. Reduce heat to medium-low and simmer until tender, about 20 minutes. Drain.
• Preheat oven to 350 degrees F (175 degrees C).
• Grease a 1 1/2-quart baking dish.
• Melt 3 tablespoons butter in a skillet over medium heat. Stir in the ham and onion; cook and stir until the onion has softened and turned translucent, about 5 minutes.
• Stir potatoes into ham mixture; transfer to the prepared baking dish.
• Melt 1/4 cup butter in a saucepan over medium heat. Stir flour into melted butter until smooth.
• Gradually whisk milk into flour mixture; season with salt and black pepper. Continue cooking and stirring until thickened, about 2 minutes.
• Reduce heat to medium-low and stir Cheddar cheese into the white sauce until melted.
• Pour sauce over ham and potatoes.
• Sprinkle bread crumbs atop casserole.
• Bake in the preheated oven until sauce is bubbly and browned, 25 to 30 minutes.

LEFTOVER TEX-MEX PORK CASSEROLE

Steps:

• Preheat oven to 375 degrees.
• Coat a 9 x 13 glass casserole dish with non-stick spray. Evenly distribute crushed tortilla chips over bottom of the dish.
• In a large skillet, heat oil and butter over medium until butter foams. Add bell peppers, onions and garlic. Saute' until soft.
• Drain the canned tomatoes, reserving the juice. Crush them up some, just so not whole.
• Add pork to skillet with vegies. Add crushed tomatoes, basil and cumin. Slowly add some of reserved tomato juice and chicken stock. This is where you need to do a lot of taste-testing. You need enough to moisten the ingredients but not too soupy, probably 3/4 cup total. Bring to a simmer for about 10 minutes.
• Add salt and pepper to taste. I also added a pinch of sugar to tone down the acidic taste.
• Pour over the chips. Top with Velvetta and cheddar cheese.
• Bake at 375 for 15 - 20 minutes until cheese is melted and bubbly.

LEFTOVER HAM WITH PASTA AND BROCCOLI CASSEROLE

Steps:

• Preheat oven to 425 degrees.
• Cook pasta according to package directions, drain and set aside.
• Steam broccoli until fork tender. Chop into small pieces.
• Heat oil in a small skillet. Add onions and cook until soft, but now brown.
• Melt butter in a medium saucepan over medium heat. Add flour and cook 1 minute.
• Add broth and whisk constantly until mixture is smooth of lumps and thickened.
• Whisk in milk.
• Remove from heat.
• Add onions, thyme, parsley, salt, and pepper.
• In a large bowl, combine cooked pasta, ham, broccoli, and sauce.
• Transfer to a casserole dish sprayed with cooking spray.
• Melt butter in a small bowl.
• Add breadcrumbs and cheese to melted butter.
• Top with breadcrumb cheese mixture.
• Bake for 12 minutes until sauce is bubbly.

LEFTOVER LAMB & RICE CASSEROLE

Steps:

• Preheat oven to 350 degrees.
• In a medium frying pan saute the onion in butter until soft and lightly browned.
• In a medium sized casserole combine the sauteed onions with the remaining ingredients, add salt and pepper to taste.
• Bake covered for 45 minutes.

CHEESY LEFTOVER HAM CASSEROLE

Steps:

• Cook rice according to package directions.
• Preheat oven to 350.
• Pull or dice ham into small pieces.
• Place rice in a 13x9" baking dish and top with ham and stir to combine. Use as much or as little ham as you would like. I used almost 2 cups because I had a lot leftover from Christmas dinner.
• In a large bowl, mix broccoli cheddar soup, milk and sour cream. Start with 3/4 c milk and add more if you would like it a little runnier. I prefer my soup base a little thicker.
• Stir 1/2 c french fried onions, peas and 1/2 c cheddar cheese into the soup mixture.
• When combined, pour the soup mixture over the rice/ham mixture and stir well, but gently, to combine.
• Sprinkle 1/2 c cheddar cheese over the rice/soup mixture.
• Top this with 1/4 c (or more) french fried onions.
• In a plastic bag, crush croutons. It took about 1/4 bag of croutons to get 1/4 cup of crushed croutons (and I used the cheesy garlic flavor).
• Sprinkle crushed croutons over top of all.
• Bake, uncovered, for 20-30 minutes or until the edges start to get bubbly and it is heated through.

ST. PADDY'S DAY LEFTOVER CORNED BEEF CASSEROLE

Steps:

• Preheat oven to 350 degrees F (175 degrees C).
• Grease a 2-quart casserole dish.
• Heat butter in a skillet over medium heat until bubbly.
• Cook and stir onion in the melted butter until browned, about 8 minutes. Set onion aside.
• Stir corned beef, chili sauce, and mayonnaise together in a bowl.
• Spread sauerkraut in the bottom of the prepared casserole dish.
• Spoon corned beef mixture on top of sauerkraut.
• Sprinkle cooked onions on top of corned beef mixture.
• Top onions with 1/2 cup Swiss cheese.
• Cover casserole dish with aluminum foil and place in preheated oven. Bake 30 minutes.
• Cut individual biscuits in half. Remove casserole from oven and place halved biscuits on top of casserole. Bake until biscuits are lightly golden brown, about 18 minutes.
• Sprinkle remaining 1 cup Swiss cheese on top of casserole. Return to oven and bake until cheese is melted, 3 to 5 minutes.

LEFTOVER CASSEROLE

Steps:

• Preheat oven to 350 degrees F (175 degrees C).
• In a large bowl combine the ham/leftover meat, macaroni, cheese, milk, soup, vegetables, salt and pepper and mix well. Spread mixture into a lightly greased 9x13 inch baking dish.
• Bake at 350 degrees F (175 degrees C) for 45 minutes, or until hot and bubbly.

LEFTOVER TURKEY-MUSHROOM-NOODLE CASSEROLE

Steps:

• Cook noodles until barely tender in boiling salted water.
• Drain well and place in shallow greased baking dish.
• Arrange turkey over noodles.
• Melt butter and add onion, cooking for a minute.
• Add in the rest of the ingredients and mix lightly then pour over the turkey and noodles.
• Bake in a moderate oven at 350 degrees until lightly browned (about 20 minutes).