Drain the palmini noodles. Squeeze out some of the excess water from the noodles without crushing them.
Step 2
Preheat an Instant Pot on the Saute setting until it says HOT. Add in the olive oil and use a spoon to coat the pan. Add in the diced white onions and cook until the onions are translucent, about 30 seconds to one minute.
Step 3
Add in the tomato basil sauce and the water. Mix it well with a spoon. Taste, adding a pinch of salt if desired.
Step 4
Place the noodles into the pot and mix gently. Set the Instant Pot to the “keep warm” setting until the noodles are hot, about 5-7 minutes. Since the noodles started at room temperature they just need to be heated gently.
Step 5
Gently toss the noodles together with the cheese. Be sure to use a rennet-free cheese for this vegetarian dish. Serve immediately.