In boiling water blanch your Spinach and Basil leaves for 45 seconds then reserve.
In a pan add the butter, let it melt and cook the onions, garlic until tender then adds the leaves and let it sit for a minute then reserve.
In a Blender add, leaves, cooked onion, garlic, milk ,cheese add some salt , pepper and process everything until smooth
Add the "Peruvian Pesto" to the pasta, let the pasta be covered by the sauce, sever with some parmesan, and your favorite cut of meat