To prepare a spinach fettuccine primavera recipe, you'll first need to prepare the spinach. You can buy fresh spinach at your local grocery store, or you can purchase frozen spinach from the frozen food section of the store. If you want to make your own spinach, cut the stems off the stalks and cut them in half. Toss the chopped spinach with the ricotta cheese and the Parmesan cheese. Season with salt and pepper to taste. Add the pasta to the boiling water and cook until al dente, about 5 minutes. Drain and set aside.