Place piquillo peppers, garlic and water in the blender or a processor, gradually add the olive oil, mix well.
Add more olive oil if desired and lactose-free cream (to taste).
Cook pasta al dente according to package instructions.
Add the sauce to the pasta and cook at low heat in a stove for a few minutes, to allows the pasta adsorbs and soaks up a little of the sauce's flavor.
Serve hot and add feta cheese and a drizzle of olive oil.