Heat your Instant Pot on saute. When the pot is warmed, add olive oil. Saute sausage until it is about 50% done. Remove sausage, slice into links. Wipe out excess oil from the Instant Pot with a paper towel. Add sausage back to the Instant Pot. Add pasta sauce to the Instant Pot.
Rinse the jars of pasta sauce with the water and pour the water into the Instant Pot. If using spaghetti break in half and add to the Instant Pot. Cook on manual high for 8 minutes. Perform a quick release. Serve immediately. Makes 6 to 8 servings. This recipe was written for a 2-quart pressure cooker. if your pressure cooker is larger there are no adjustments needed to this recipe.