How to Make the Juiciest Roast Beef Sandwich | Easy Roast Beef Recipe

This coveted juicy and tender Roast Beef Sandwich Recipe came from a 1940’s pool hall – here is your invite to enjoy this special recipe with us!

hot roast beef sandwiches

What’s not to love about a Roast Beef Sandwich?

Picture it, is the 1940’s and you’re young and in love so you get married. The wedding is finished and you and your wedding attendants head over to the pool hall for the reception. You sit down with a with a glass of beer and a juicy roast beef sandwich in a homemade bun. It’s dripping in goodness, so you have to shove a paper napkin down your dress, so you don’t get that wedding dress dirty. Oh and there’s definetely some jazz being played in the background.

My grandparents had this recipe from way back in the day, served it at their anniversary and have passed it on to their kids and grandkids. It’s one of the most coveted recipes in my box because grandpa actually signed off on it’s amazingness! This historic and nostalgic dish has its roots as a traditional English dish from the 1700’s – there’s even a song called “The Roast Beef of Old England”!

Roast Beef Sandwich Recipe

This delicious sandwich is made with love and you will feel it in each bite – it really is a winning combination of ingredients and it makes for a hearty meal! It isn’t something you can just get at your local deli counter and it’s a step up from a trip to the Arbys drive thru (although those curly fries are pretty great!).

I took the original recipe translated into Instant Pot times and voila’! With freezers full of beef, here on the farm, we like to pull this recipe out for family gatherings, old fashioned card parties, and an occasional birthday!

ingredients for roast beef in an instant pot

Why You’ll Love this Delicious Roast Beef Recipe

  • This meal can be served hot or cold! Hot roast beef sandwiches are just as great as the chilled leftover roast beef will be!
  • Homemade Roast Beef Sandwich recipes like this one allow you to cook it with the flavors that you like as opposed to deli meat / deli roast beef where it is already cooked and cut.
  • This is a great sandwich to serve on holidays and/or anytime you are hosting!

roast beef in instant pot

Ingredients to make a Roast Beef Sandwich

  1. Instant Pot (slow cooker)
  2. 1 Large Rump Roast
  3. 1 cup Water
  4. 6 Bay Leaves
  5. 2 tsp Salt
  6. 1 tsp Garlic salt
  7. 2 tsp Pepper
  8. 2 Large Sliced Onions
  9. 2 tbsp Lawery Salt or Pleasoning Seasoning
rubes special roast beef

Steps to make a Roast Beef Sandwich

  • Add Roast to Instant Pot with 1 cup of water.
  • Add all of the ingredients above into the pot
  • Press the Meat button and adjust to 50 minutes, making sure to seal the Instant Pot.
  • Once cooked, cut with the cross grain into thin slices and place back into its juices to simmer for about 30 minutes (this beef broth can be used for other recipes especially soup!)
  • Add to bun, top with any ingredients you’d like and enjoy!

What should I put on a Roast Beef Sandwich?

If this sandwich is one thing – besides from being so tasty – it’s flexible! You can switch up the toppings and the bun to customize to your liking!

Sandwich topping ideas

  • Caramelized Onions
  • Slice of provolone, cheddar, swiss, mozzarella or pepper jack cheese
  • Horseradish mayo
  • Au jus right out of the pot
  • Red Onion
  • Worcestershire sauce
  • Coleslaw
  • Blue Cheese
  • Pickles (Try out our homemade refrigerator pickle recipe!)

Homemade sauces to try: Remoulade Sauce and Horseradish Cream

fresh buns for sandwiches

Sandwich bread / bun ideas

The list goes on!

Printable Recipe Card

roast beef in instant pot

Rube Kruger Beef Sandwiches

The best and juiciest roast beef sandwiches
Prep Time 10 minutes
Cook Time 50 minutes
Course Main Course
Cuisine American


  • 1 instant pot


  • 1 Large Rump Roast
  • 1 cup Water
  • 6 Bay Leaves
  • 2 tsp Salt
  • 1 tsp Garlic salt
  • 2 tsp Pepper
  • 2 Large Sliced Onions
  • 2 tbsp Lawery Salt or Pleasoning Seasoning


  • Add Roast to Instant Pot with 1 cup of water.
  • Then add all of the ingredients above.
  • Press the Meat button and adjust to 50 minutes, making sure to seal the Instant Pot.
  • Once cooked, cut with the cross grain into thin slices and place back into its juices to simmer for about 30 minutes.
  • Add to bun and enjoy!
Keyword beef, roast beef, sandwiches

Questions people are also asking

What cooking method is used for Roast Beef?

In this recipe we use our Instant Pot because it is considered a multi cooker meaning it can cook food in a variety of ways. That being said, there is no right or wrong way to cook roast beef. You can use an air fryer, crock pot, or just throw it in the oven!

Are Chuck Roast and Beef Roast the same?

Chuck Roast is a larger cut of meat that can be used in pot roast, beef stew, etc. and it is cut from the shoulder area of the cow. Beef Roast on the other hand, is cut from the rear legs of the cow. While both taste great, Chuck Roast is more fatty while Beef Roast is more lean.

What do you serve with a Roast Beef Sandwich?

Who doesn’t love a sandwich and soup combo? Check out our delicious soup recipes that will pair along nicely with your fresh Roast Beef Sandwich:
Creamy Potato Soup
Homemade Tomato Soup
Green Bean Soup
Potato Chips or French Fries are always classic as well 🙂

How can I use my leftover Roast Beef?

Besides from whipping up another great sandwich, you can use Roast Beef in many other recipes including Beef Stroganoff, Roast Beef Hash, Pot Roast, Sliders, etc. You can also add the meat to enhance your pasta, soup, or salad dishes.

roast beef in instant pot

Tips for making these scrumptious Roast Beef Sandwiches

  • Cook the meat up, store it in a gallon freezer bag, label it, and freeze it for busier times around the house or farm (make sure to thaw it either in the refrigerator or cool water bath – not just out on the counter). Then all you need is a fresh loaf of bread, buns, or heck even serve it over a heaping pile of mashed potatoes.
  • Don’t toss the juice! The juice is the best part! If you still have some left after all of the meat is gone, use it in a soup or as the liquid in your next casserole.
  • Speaking of juice, when serving a hot sandwich, you could also put the juice in individual cups to dip the sandwiches in!

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This post may contain affiliate links from a paid sponsor, Amazon or other program. When you use these links to make a purchase I earn a small commission at no extra cost to you. This allows me to continue creating the content that you love. The content in this article is created for information only and based on my research and/or opinion. 

Emily T.

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