Make Instant Pot Pot Roast recipe with chuck or rump roast in as little as 1.5 hours! You can also add baby carrots and potatoes to make it a one pot, comfort meal complete with tender (not mushy) vegetables, fall apart beef, and delicious gravy!
Add 2 tbsp olive oil, Saute roast for about 3-5 minutes. Remove with tongs. Add 1 tbsp olive oil and onions. Saute 5 minutes. Add beef stock, red wine and vinegar and deglaze pot.
Press Cancel and lay roast on top followed by mushrooms. If using 8 quart Instant Pot only, wrap potatoes and carrots separately in unbleached parchment paper.
Place vegetables in pot. Close lid, set pressure vent to Sealing and cook 60 minutes on High Pressure (20 minutes per lb.). After, Natural Release 15 minutes. Remove roast to cutting board.
Switch electric pressure cooker to Saute. In bowl, whisk cold water with cornstarch, add to the pot and stir. Cook for a few minutes until bubbly and thickened.