Step 1

Season beef with salt, pepper, and oregano.

Step 2

Warm oil over medium high heat on a large plan.

Step 3

Sear seasoned beef on both sides until a beautiful brown sear color occurs (about 3-4 minutes per side).

Step 4

Remove beef and set aside.

Step 5

Into the same pan, add onions and saute until softened, about 3 minutes. Add in garlic, and cook an additional 30 seconds.

Step 6

Place onions and beef and remaining ingredients into a slow cooker. Close with lid and cook on high for 3-4 hours or low for 6-8 hours.

Step 7

Once beef is cooked, remove beef and set to the side. Drain sauce over a colander into a large bowl. The juice left over is the au jus that can be thickened. (Note below.)

Step 8

Shred beef and return to the slow cooker with some of the au jus to keep moist.

Step 9

To assemble sandwiches, place cheese into the inside of a hoagie roll and toast in the oven over 450 degrees for a few minutes, or until cheese melts.

Step 10

Top hoagie rolls with shredded beef.

Step 11

Serve with au jus to dip into.

Step 12

Serves: 8-10 sandwiches

Step 13

Melt butter in a medium pot over medium high heat.

Step 14

Add flour, whisk and cook for a minute and slowly whisk in the au jus.

Step 15

Continue whisking and let it come to a boil.

Step 16

Once it comes to a boil, lower to a simmer and cook for about 4-5 minutes.

Step 17

Turn off heat, and the sauce will thicken a bit more once cooled down.

Step 18

Season beef with salt, pepper, and oregano. Turn on pressure cooker to SAUTE HIGH and heat oil. Place seasoned beef in pot and sear for 5 minutes. Flip and sear for an additional 5 minutes. Remove from pot and set aside.

Step 19

Add onions to the pot and saute until softened, about 3 minutes. Add in garlic, and cook an additional 30 seconds.Place onions and remaining ingredients into Instant pot. Stir. Add beef back to pot, nestling in the liquid. Place on lid and seal valve. Cook on HIGH pressure 45 minutes then allow pressure to naturally release 25 minutes. Let out any remaining pressure.

Step 20

Proceed with crockpot directions above.

Step 21

For sandwiches: Preheat oven to 375°F. Open up sliced hoagie buns and butter the insides. Place opened buns on a baking sheet and toast for 5 minutes. Remove from oven, add a slice of provolone cheese to each roll, and bake for 1 minute longer. Divide beef between buns and serve immediately serving with au jus for dipping.