Step 1

Place the metal trivet in the bottom of the Instant Pot, and place the frozen roast on top of the trivet.

Step 2

Mix together the water and beef bouillon. Pour the beef broth over the roast.

Step 3

Sprinkle all of the spices over the roast (salt, paprika, pepper, oregano, and chili powder).

Step 4

Place as much of the garlic and onion on top of the roast as you can. Put any additional pieces around the sides of the roast.

Step 5

Close the lid, and set the pressure release valve to the sealing position. Program the Instant Pot on Manual mode for 90 minutes. Once the roast finishes cooking, allow it to natural release for 30 minutes before turning the pressure release valve to the venting position.

Step 6

Once the float valve drops, you can carefully remove the lid and allow the roast to cool to the point that it’s safe to handle. Remove the roast to a large bowl and use two forks to easily shred it.