Quick Check Roast Beef and Potato Sub
Instant Pot Hot Beef Sandwich and Mashed Potatoes—tender roast beef and brown gravy served over toasted white bread with a side of creamy mashed potatoes. Diner food at home!
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Note: The SLOW COOKER hot beef sandwich recipe instructions are included in the recipe card below.

Instant Pot Hot Beef Sandwich and Mashed Potatoes
Each week in 2022 I'm sharing a recipe inspired by one of the 50 states. So far I've covered…
- Alabama
- Louisiana
- Utah
- Minnesota
- Colorado
- Idaho
- Hawaii
- South Carolina
- Illinois
- Iowa
- Alaska
- New Mexico
- West Virginia
- Arkansas
- Kentucky
- South Dakota
- Pennsylvania
- Georgia
Today's recipe is inspired by the Peace Garden State, North Dakota. North Dakota is called the Peace Garden State because the International Peace Garden straddles the boundary between North Dakota and Manitoba, Canada.
Some more fun facts about North Dakota:
- North Dakota leads the nation in production of spring wheat, durum wheat, dry edible peas, dry edible beans, honey, flaxseed and canola. Nearly 90% of North Dakota's land area is in farms and ranches.
- ExplorersWilliam Clark and Meriwether Lewis spent more time in what is now North Dakota than any other place on their journey.
- North Dakota is home to more wildlife refuges (63) than any other state.
- The average high in North Dakota in February is 29 degrees, the same as Minneapolis.
"I never would have been President were it not for my experiences in North Dakota."
Teddy Roosevelt
While looking around for recipes that could represent North Dakota I came across the hot beef sandwich. I knew immediately that this recipe would be perfect to make in an Instant Pot or slow cooker. Basically it's tender roast beef piled onto pieces of white bread, often Texas toast, and then served with some mashed potatoes and brown gravy. Sometimes the mashed potatoes are served on top of the sandwich.
The hot beef sandwich is one of the most popular dishes in the state of North Dakota. It can be found at many local diners. If you're ever in North Dakota check out this list of the best restaurants to order a hot beef sandwich.
My Instant Pot version of hot beef sandwich is unique because you cook the roast and mashed potatoes in the same pot. I started with a chuck roast and let it pressure cook for several minutes. Then I quick released it and added in the potatoes for another 8 minutes and then finished it off with a natural pressure release. Usually you should never quick release roast but because you're adding in a separate ingredient and then finishing with a natural pressure release it's okay. If you don't want mashed potatoes then cook the roast for 70 minutes and then let the pot sit for 15 minutes before releasing any remaining pressure.
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Try these other beef sandwiches…
Instant Pot Philly Cheesesteak Sandwich
Instant Pot Maid-Rite Sandwiches
Instant Pot Chicago Italian Beef Sandwich
Instant Pot Southwest Tavern Sandwiches
Instant Pot Garlic Beef Sandwich
Instant Pot BBQ Beef Sandwich
Instant Pot BBQ Brisket Sliders
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Description
Tender roast beef and brown gravy served over toasted white bread with a side of creamy mashed potatoes. Diner food at home!
For the roast beef and gravy:
- 3 pounds beef chuck roast, trimmed of excess fat
- 1 tsp kosher salt
- 1 tsp garlic powder
- 1 cup beef broth
- 1 packet of brown gravy dry mix
For the mashed potatoes:
- 3 pounds Russet potatoes, peeled and cubed
- 1 1/2 tsp kosher salt
- 3/4 cup milk
- 3 Tbsp butter
- 1/2 tsp garlic powder
- 1/4 cup sour cream
For the sandwich:
- 12 slices of white bread or Texas toast
- Season the beef: Pat the chuck roast with the salt and garlic powder. Pour broth into Instant Pot and place the chuck roast in the bottom of the pot.
- Cook beef: Cover Instant Pot and lock lid into place. Make sure valve is set to sealing. Set the manual/pressure cook button to 70 minutes. When time is up move the valve to venting (quick release).
- Cook potatoes: Open the Instant Pot and place a steamer basket in the pot on top of the beef. Add the potatoes to the steamer basket. (If you don't have a steamer basket just add the potatoes straight into the Instant Pot). Lock the lid into place, set valve to sealing and set the manual/pressure cook button to 8 minutes. When the time is up let the pressure release naturally for 15 minutes then move the valve to venting. Remove the lid.
- Mash potatoes: Dump the potatoes into a large bowl and mash. Add in the butter, milk, kosher salt, garlic powder and sour cream and stir/mash until creamy and smooth.
- Prepare the gravy: Move the roast to a cutting board and let it rest. Use a fat separator* to strain off the fat from the broth in the Instant Pot. Add strained broth back into the Instant Pot. Turn the Instant Pot to the saute setting. Slowly whisk in the gravy packet. It will start to thicken in a couple of minutes. To make a thicker gravy add in a cornstarch slurry (in a small bowl stir together 1-2 Tbsp of cornstarch with 1-2 Tbsp of water, until smooth.Then pour the mixture into the Instant Pot. The cornstarch mixture will thicken up contents of pot quickly). Salt and pepper the gravy to taste.
- Shred the beef: Cut the roast or shred it up. Season it to taste with salt and pepper.
- Assemble the sandwiches: Toast the slices of bread (optional). Place a portion of roast beef on a slice of bread on a plate. Top the sandwich with another piece of bread. Scoop some mashed potatoes on the plate. Ladle gravy over the top of the sandwich and mashed potatoes. Eat and enjoy!
Notes
I used my 6 quart Instant Pot Duo 60 7 in 1*.
If you don't want mashed potatoes then cook the roast for 70 minutes and then let the pot sit for 15 minutes before releasing any remaining pressure.
Slow cooker instructions: Pat the chuck roast with the salt and garlic powder. Pour broth into slow cooker and place the chuck roast into slow cooker. Cover and cook on low for 6 hours. Add in the potatoes and cook on low for another 2-4 hours (total time 8-10 hours). Use a slotted spoon to remove the potatoes. Dump the potatoes into a large bowl and mash. Add in the butter, milk, kosher salt, garlic powder and sour cream and stir/mash until creamy and smooth. Move the roast to a cutting board and let it rest. Use a fat separator to strain off the fat from the broth in the slow cooker. Add strained broth into a saucepan on the stove. Heat over medium high heat. Slowly whisk in the gravy packet. It will start to thicken in a couple of minutes. To make a thicker gravy add in a cornstarch slurry (in a small bowl stir together 1-2 Tbsp of cornstarch with 1-2 Tbsp of water, until smooth. Then pour the mixture into the saucepan. The cornstarch mixture will thicken up contents quickly). Salt and pepper the gravy to taste. Slice the roast or shred it up. Season it to taste with salt and pepper. Toast the slices of bread (optional). Place a portion of roast beef on a slice of bread on a plate. Top the sandwich with another piece of bread. Scoop some mashed potatoes on the plate. Ladle gravy over the top of the sandwich and mashed potatoes. Eat and enjoy!
- Category: Beef
- Method: Instant Pot
How to use a fat separator:
I used my OXO Fat Separator (I purchased it on Amazon*) to separate the fat before making the broth into gravy. Here's how to use it:
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*Karen Petersen is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.
Source: https://www.365daysofcrockpot.com/instant-pot-hot-beef-sandwich-and-mashed-potatoes/
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