Prepare The Roast

1. Season the roast generously with salt & pepper on all sides.

SLOW COOKER

1. Add the beef roast to the slow cooker. Add the potatoes, onion, and carrots on top.
2. In a small bowl, whisk together the beef broth, balsamic vinegar, Dijon mustard, and a pinch of salt & pepper.  Pour broth mixture on top of all ingredients.
3. Cook HIGH 4-5 or  LOW 8-10 hours.

Instant Pot

1. Turn the Instant Pot to sauté. Once hot, add the oil and the prepared beef. Cook 3-5 minutes on each side or until beef is browned. You may need to cut the beef to make the meat fit. Remove beef from the Instant Pot.
2. In a small bowl, whisk together the beef broth, balsamic vinegar, Dijon mustard, and a pinch of salt & pepper. Pour the mixture into the Instant Pot and deglaze the bottom by scraping the bits off with a wooden spoon.
3. Add the beef back to the pot.
4. Close lid and seal valve. Set high pressure and cook 20 minutes per pound of beef. When cooking time is complete, manually quick release the pressure.
5. Add the potatoes, onion, and carrots. Close lid and seal valve. Set high pressure and cook 5 minutes. When cook time is done, quick release the pressure.