4 cups chicken broth, vegetable broth, or garlic broth
1 lb spaghetti
8 tbsp salted butter, divided into 1-tablespoon pats
1 cup grated Pecorino Romano or Parmesan (or 1/2 cup of each)
1 tbsp cracked black pepper plus more to taste (
Instructions
Pour the broth into the Instant Pot, break the spaghetti over it and add to the broth, then follow with 4 tablespoons of the butter.
Secure the lid and move the valve to the sealing position. Hit Manual or Pressure Cook on High Pressure for 8 minutes. Quick release when done. (NOTE: The pasta will appear soupy once the lid comes off. This is what we want because adding the dairy will thicken it up perfectly.)
Stir in the remaining 4 tablespoons butter until melted, then add the cheese and stir until well combined. The sauce will thicken as soon as the cheese is absorbed, which is almost immediately.
Add the cracked black pepper and give it a final stir. Add more pepper to taste.
Transfer the pasta to bowls and top with more cheese and pepper, if desired.