Step 1

Using the SAUTE feature on NORMAL, heat the olive oil.

Step 2

Add the Italian sausage, breaking apart with the back of the spoon. Cook, stirring regularly until it loses its pink and begins to render fat.

Step 3

Add onions, sweet peppers, and garlic and cook until softened.

Step 4

Drain the meat of any excess grease.

Step 5

Add Italian seasoning and salt and pepper to taste.

Step 6

Cut the uncooked spaghetti in half and place them in the pot on top of the meat in a crisscross pattern.

Step 7

Add Spaghetti sauce, diced tomatoes, and water. Do NOT stir. Push the noodles down gently so they’ll be submerged in the liquid.

Step 8

Close the lid of the Instant Pot, making sure the valve is on SEALING position. Cook on HIGH pressure for 7 minutes. When the 7 minutes and the pressure cooker beeps, do a QUICK release.

Step 9

Press CANCEL to turn off the Instant Pot and open lid. Let noodles stand for about 1 to 2 minutes and stir to distribute sauce.

Step 10

Ladle on serving plates and sprinkle with Parmesan cheese, if desired. Serve hot.