Step 1

Mix together salt, ground pepper, and sugar in a small bowl. Then season the beef with it. Let the meat sit for 15 minutes at room temperature with the seasoning.

Step 2

Turn on the sauté function on the Instant Pot. Add 1/2 tablespoon of the olive oil and splash of broth then sear the roast for 2 minutes on each side.

Step 3

Remove the beef and add 2 tablespoons of beef broth then add the remaining olive oil to the pot. Stir the broth to pick up the bottom bits from the pot then add the onion, red wine, remaining broth and Worcestershire to the pot. Stir then place the beef back into the pot. Cover the pot, set the valve to pressure and pressure cook for 75 minutes.

Step 4

Move the valve to quick release then carefully remove the cover from the Instant Pot. Add the beef to a cutting board.

Step 5

Add the uncooked pasta to the pot along with the mushrooms, garlic and remaining onion. Cook 2-3 minutes. Cover and pressure cook for an additional 2 minutes.

Step 6

As the pasta cooks, shred the meat with two forks. It should shred easily.

Step 7

When the time goes off, move the valve to quick release then remove the cover. Add the Greek yogurt and remaining broth. Stir and add the shredded beef to the pot. Serve immediately garnished with parsley.

Step 8

Mix together salt, ground pepper, and sugar in a small bowl. Then season the beef with it. Let the meat sit for 15 minutes at room temperature with the seasoning.

Step 9

Bring a skillet to medium heat. Add 1/2 tablespoon of the olive oil and splash of broth then sear the roast for 2 minutes on each side.

Step 10

Remove the beef from the skillet then add 2 tablespoons of beef broth then add the remaining olive oil to the skillet. Stir the broth to pick up the bottom bits from the pot then add the onion, red wine, remaining broth and Worcestershire to the pot. Cook 2-3 minutes.

Step 11

Transfer the beef and contents of the skillet into the slow cooker. Cover and cook on high 4 hours or low 8 hours.

Step 12

Before the last 30 minutes of cooking, remove the beef from the pot and put the pasta in to cook.

Step 13

While the pasta cooks, shred the beef. Once the pasta is cooked, add the shredded beef and stir in the Greek yogurt. Serve immediately garnished with parsley.