Add the remaining garlic and cook for another minute then add water and deglaze the base of the inner pot.
Press Cancel< /strong> and pour the chopped tomatoes on top of the water/veg, but do not stir.
Pressure Cook on High for 15 Minutes. When the time is up, carefully quick release the pressure.
While the sauce cooks, cook your pasta according to the packet instructions. Once cooked drain, but reserve a little of the pasta water.
When pressure cooking is done, open the lid and use a hand blender to smooth the tomato sauce. Add some of the reserved pasta water to thin out the sauce slightly.
Place the meatballs in the sauce and secure the lid again.
Pressure Cook on High for 10 Minutes (the dish is going to cook while the pot is coming to pressure). When the time is up, carefully quick release the pressure.