Easy Weeknight Shepherd's Pie with Leftover Roast Beef (2024)

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Sneak Preview: This Shepherd’s Pie with Leftover Roast Beef recipe is a simple way to use pot roast or roast beef leftovers for a weeknight casserole. You won’t encourage seconds of your Sunday pot roast with dreams of this Shepherd’s Pie in your head.

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If your family can predict the menu for the next two or three days whenever you prepare a beef roast, surprise them. Use your leftovers to make Shepherd’s Pie. This recipe might be even better than the original pot roast and potatoes that started it.

Leftovers were never so comforting.

Four Reasons Why This Will Become a Favorite Recipe

  1. Surprise your family with something new and better than just reheating leftover roast and potatoes.
  2. Because the meat is already cooked, it doesn’t take long to assemble this recipe.
  3. Have fun with the vegetables. Use corn, green beans, mushrooms, or baby limas if you prefer. Substitute mashed cauliflower for the potatoes.
  4. Because there are only two people at my dinner table, we sometimes have shepherd’s pie leftovers. They are worth fighting over.

Happy Cooks Speak Up

“Absolutely yummy recipe! Used left over Tri-tip and it was perfect. Thank you for giving me another great go-to recipe! Family loved it too!!” CHRISTY M.

Is it Called Shepherd’s Pie or Cottage Pie?

According to Jamie Oliver, make this recipe with lamb and call it Shepherd’s Pie. Then, make it with beef and call it Cottage Pie. Oops! This recipe calls for beef; however, I called it Shepherd’s Pie—my mistake.

But it’s too late to teach Google a new trick. So anyway, I think most Americans call this dish Shepherd’s Pie no matter what kind of meat they use.

Roast Beef Leftovers?

I called this a”Weeknight” recipe because we usually have pot roast on Sunday. So that means we have this easy leftover beef recipe the following week.

Whenever I have this dilemma, I can’t decide if I want this Weeknight Shepherd’s Pie recipe, Vegetable Beef Soup, Steak and Mushroom Soup, or Leftover Brisket Quesadillas. They are all great ways to recycle leftover beef.

Another quick idea that doesn’t require a recipe is a beef roll-up. Slice or dice your beef, add shredded cheese and roll it up in a tortilla or big lettuce leaf. Or make roast beef enchiladas substituting finely chopped roast beef for the ground meat in these Memorable Green Chile Beef Enchiladas.

While we’re on the topic of roast beef leftovers, here are some other leftovers that could provide the beef for this recipe:

  • Thinly slices of leftover steak
  • Leftover roast beef stroganoff (without egg noodles, pasta, or rice added)
  • Roast beef sandwiches with horseradish
  • Roast beef sliders
  • Beef stew
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If you don’t have leftovers, buy a pot roast or use sliced roast beef from the deli counter—more about that in the recipe.

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Possible Substitutions

1. Ground Beef for Leftover Pot Roast

It’s worth noting that many people substitute one pound of ground beef for pot roast or roast beef. Of course, you could also substitute lamb or ground turkey.

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2. Leftover Mashed Potatoes

The recipe below includes instructions for the mashed potato topping if you don’t have leftovers. I try to make plenty of potatoes and gravy, too. I don’t have to make them again for this recipe.

3. Mashed Cauliflower for Potatoes

Are you counting carbs? Substitute mashed cauliflower for the potatoes. It’s also scrumptious. If you use my recipe for mashed cauliflower (it’s not mushy at all), I bet your family will be hard-pressed to tell the difference.

4. Mushrooms, Corn, or Green Beans

If mushrooms aren’t your thing, no worries. Leave them out.

If you want more veggies, I have subbed corn or green beans in the past, and it didn’t hurt the recipe.

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How To Make the Mashed Potato Topping

The directions call for cooking three peeled potatoes in water. When tender, drain well.

I cook potatoes in the Instant Pot (paid link) by adding 1-1/2 cup water to the pot along with the peeled and chopped (large chunks) potatoes. (Note: If you’re a garlic lover, throw in a couple of garlic cloves.)

Set the Instant Pot to high pressure for 10 minutes. Release the pressure immediately, and check if the potatoes are tender. Drain well and allow to sit in the hot pan for a few minutes to dry out.

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How To Assemble the Meat Layer

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Sprinkle with dried or fresh thyme. (Optional: To add more flavor to the sauce, add Worcestershire sauce, soy sauce, or other favorite spice mixtures.)

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How To Put Together Shepherd’s Pie with Leftover Roast Beef

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I like using a spring-loaded ice cream scoop because it can be challenging to spread the potatoes like you frost a cake.

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Sprinkle with paprika or smoked paprika if you like. Bake in a 350˚F (170˚C) oven until the mashed potato tips are golden brown and the beef layer is bubbly.

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FAQ About Leftover Beef Recipes:

How do you moisten dry or leftover roast beef?

Add water, beef broth, barbecue sauce, or a cream soup such as condensed cream of mushroom sauce.

How do you tenderize leftover roast?

If your leftover roast beef is too chewy, it probably wasn’t cooked long enough originally. Simmer the meat in liquid until it is fork-tender. This may take a while, perhaps 1-3 hours.

What else can I do with leftover roast beef?

We love this Beef and Vegetable Soup Without Tomatoes that is good with a lot or a little beef.

Parting Thoughts: What did your mom do with roast beef leftovers? A friend says his mom always made Roast Beef Hash every Monday night because they always had Pot Roast and Potatoes on Sunday. Too bad she didn’t have this recipe in her back pocket to make her menu a little more interesting.

Help at Your Fingertips: For questions or suggestions, email Paula at saladinajar.com. If you need help, I’m happy to troubleshoot via email (faster than leaving a comment). Attach pictures and as many details as possible for the best advice.

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Yield: 8 servings

Weeknight Shepherd’s Pie with Leftover Roast Beef

By Paula Rhodes

This recipe features roast beef (leftovers are fine) and vegetables (peas and carrots) in a rich beef gravy covered with a layer of seasoned mashed potatoes.

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(5 stars if you loved it)

5 from 111 votes

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Video

Prep time: 30 minutes minutes

Cook time: 20 minutes minutes

Total time: 50 minutes minutes

Ingredients

Mashed Potato Topping:

  • 3 medium (639 g) potatoes, peeled
  • ½ cup (114 g) milk
  • 2 tablespoons butter
  • ½ teaspoon salt
  • ¼ teaspoon white pepper

Meat Layer:

  • 1 tablespoon vegetable oil
  • ¼ cup (13 g) fresh or frozen onion, chopped fresh, or frozen
  • 4 ounces (113 g) fresh mushrooms, sliced or chopped or 2 oz. canned mushrooms, sliced
  • 1 cup (140 g) frozen peas and carrots
  • 1 .87 oz package (24 g) brown gravy mix + 1 cup water or use leftover gravy
  • 1 package (482 g) beef roast au jus-17 ounces or 2-3 cups leftover beef roast, fork-shredded or cut into chunks
  • ¼ teaspoon dried thyme
  • freshly-ground pepper
  • paprika
  • 2 tablespoon (28 g) butter thin slices

Instructions

Mashed Potato Topping

  • Cover 3 medium (639 g) potatoes, peeled with water, and boil until tender. Drain.

  • Mash potatoes until relatively smooth. Heat 1/2 cup (114 g) milk and 2 tablespoons butter in a microwave oven for 1 minute. Add to potatoes. Season to taste with 1/2 teaspoon salt and 1/4 teaspoon white pepper

Beef Layer

  • Preheat your oven to 350˚ F (180˚C).

  • Preheat a large skillet and add 1 tablespoon vegetable oil. Sauté 1/4 cup (13 g) fresh or frozen onion, chopped in skillet until soft. Add 4 ounces (113 g) fresh mushrooms, sliced or chopped to onions, and continue to sauté until browned. Add 1 cup (140 g) frozen peas and carrots.

  • In a separate bowl, prepare 1 .87 oz package (24 g) brown gravy mix + 1 cup water. Add to skillet along with 1 package (482 g) beef roast au jus-17 ounces and 1/4 teaspoon dried thyme. Stir and simmer until the mixture begins to thicken. Season with freshly-ground pepper

  • Pour meat mixture into a greased 1-1/2 quart casserole dish. Carefully spoon mashed potatoes on top and swirl. Sprinkle with paprika if desired and 2 tablespoon (28 g) butter, thinly sliced.

  • Bake in 350˚F (180˚C) oven for 20-25 minutes or until potatoes are golden on top and the beef mixture is bubbly.

Notes

I don’t use the brown gravy mix if I have lots of leftover gravy. If you prefer to make your gravy, here’s a good beef gravy recipe you can put together from scratch.

Mushrooms are optional but add to the meaty taste and texture.

If you have it, smoked paprika is nice on top, or leave it off completely.

Potatoes can be cooked in an Instant Pot for 10 minutes under high pressure with quick release.

Nutrition

Serving: 1 | Calories: 353kcal | Carbohydrates: 18g | Protein: 25g | Fat: 21g | Saturated Fat: 10g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 9g | Trans Fat: 1g | Cholesterol: 94mg | Sodium: 313mg | Potassium: 818mg | Fiber: 3g | Sugar: 2g | Vitamin A: 1879IU | Vitamin C: 18mg | Calcium: 55mg | Iron: 3mg

All images and text ©️ Paula Rhodes for Salad in a Jar.com

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Easy Weeknight Shepherd's Pie with Leftover Roast Beef (2024)

FAQs

What can I do with leftover overcooked roast beef? ›

A simple fix for overcooked meat is to dump it in your food processor with some olive oil, purée it, and use it as a stuffing for everything from hand pies and empanadas to dumplings and ravioli.

How to use tough leftover roast beef? ›

Try Beef Stroganoff

Put leftover roast beef to good use and make slow cooker beef stroganoff, as cooking tough meat slowly in liquid tenderizes the tough fibers. To make beef stroganoff, place the tough roast beef in a slow cooker.

What is a shepherd's pie called when it is made from beef? ›

The terms shepherd's pie and cottage pie have been used interchangeably since they came into use in the late 18th and early 19th centuries, although some writers insist that a shepherd's pie should contain lamb or mutton, and a cottage pie, beef.

Is shepherd's pie made from leftovers? ›

The best cottage pies and shepherd's pies are made with leftover roast meat, not mince. In fact, the whole purpose of these pies was to eke out the leftovers. If you don't have any, use finely diced fresh meat.

How do you soften overcooked roast beef? ›

You may need some sweetness and acidity to bring up the tough meat. Simmer in liquid. Just like for burnt meat, if your meat gets tough and dry then you can simmer it in a little bit of broth for a couple minutes. Don't allow it to overcook again but just allow the liquid to penetrate the meat.

How long does leftover roast beef last in the fridge? ›

USDA recommends using cooked beef within 3 to 4 days, kept refrigerated (40°F or less). Refrigeration slows but does not stop bacterial growth. USDA recommends using cooked leftovers within 3 to 4 days.

How do you make roast beef tender after cooked? ›

Braise it in the oven, low and slow, or a slow-cooker. It will take hours, but you get a fall-apart roast that can be delicious, especially if you are braising it in a flavorful liquid. Think chili, for example, or a good stew base. The low and slow breaks down the collagen and makes the meat tender.

Does roast beef get softer the longer you cook it? ›

Your meat will be juicier and more tender

The longer cooking time and the low heat complement each other perfectly. As a result, even though the meat is cooked for far longer, it doesn't dry out because the temperature is low. As a result, this is the best way to retain all the natural juices of the meat.

What can I do with tough steak that's already cooked? ›

Only do this if your steak is nearly unsalvageable but too wasteful to throw away. Cut it into 1-inch pieces, toss into the food processor with a drizzle of olive oil and turn it into a semi-pureed beef filling. You can use it in pies, add it to pasta sauces, or turn it into savory dumplings.

What is the difference between Irish and British shepherd's pie? ›

It's called cottage pie in the U.K. because they use beef and in Ireland since the shepherds tend sheep, it's shepherd's pie. No doubt, the English put out an excellent cottage pie, but in Ireland it used to be a delicacy since the Irish couldn't afford beef they repurposed any unused veggies and meat.

What's the difference between cottage pie and shepherd's pie? ›

The main difference between Cottage Pie and Shepherd's pie is cottage pie uses ground beef, and Shepherd's pie uses ground lamb. Both pies are cooked with vegetables and gravy and baked under a layer of mashed potatoes. To make Shepherd's pie using this recipe, simply substitute ground lamb.

Does shepherd's pie have gravy in it? ›

Talk about satisfying. Ground beef, vegetables, and gravy are baked under pillowy mashed potatoes. If it's not yet already, this will soon be a family favorite recipe.

What can I do with tough roast beef leftovers? ›

If your beef is tough, shredding it and making burritos or slow cooking in a stew or chilli are perfect.

What is original shepherd's pie made of? ›

Shepherd's pie comes to us from England, and is traditionally made with lamb or mutton. Here in the states we are more of a beef eating culture than a lamb eating one, and when one is served "shepherd's pie" here, it is most often made with ground beef.

Is it safe to eat shepherd's pie that was left out overnight? ›

According to the USDA, food that has been left out of the fridge for more than two hours should be thrown away. That's because between 40° F and 140° F (what the USDA calls the "Danger Zone"), bacteria grows incredibly fast and can make you sick.

How to salvage overcooked beef? ›

Simmer In Liquid

Warm some water or broth in a pan with some barbeque sauce and let your steak simmer. The barbecue sauce will help restore some flavor. Do not let the temperature get too high because you are aiming for the liquid to penetrate your steak without further cooking it. This should only take 1 to 2 minutes.

What happens when you overcook roast beef? ›

If you overcook a roast it is going to be dry and crumbly. In order to rescue the meat you've got to get some moisture back into that stuff. I'd begin by shredding the meat. Just pull it apart into bite sized strips.

Can you save an overcooked roast? ›

Whether you overcooked your steaks or a roast, dried-out beef isn't a favorite of anyone. For steak, slice it up, and soak it overnight in your favorite marinade. Use it in wraps, soups, shepherd's pie or pastas. For roasts, place it in the slow cooker with barbecue sauce, and cook on low for a few hours.

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