Set the Instant Pot to Saute Mode and add 2 tablespoons of olive oil. Once hot, saute the broccoli florets till they are al-dente, about 1 – 2 minutes. Transfer to a plate.
Next, add garlic, onion, and chicken pieces. Saute for 1 minute or until the chicken is pale white. Add broth, cream, cheese, seasoning, salt, and stir nicely.
Add uncooked pasta in the sauce, gently stir to mix, just enough to submerge the pasta into the broth.
Close the lid, point valve to sealing (for older models).
PRESSURE Cook on high pressure for 5 minutes for al dente pasta. Cook for 1 – 2 minutes more for slightly more cooked pasta.
Do a quick release, once the pressure has been released, carefully open the lid and add sauteed broccoli, fresh basil, and mix.
Taste the sauce and adjust for salt and pepper. After that, serve the meal.