In a large skillet or Dutch oven, heat oil over medium heat. Add shrimp and cook until opaque, about 1 minute per side. Set aside.
Add garlic and onion to the skillet, and cook until onions have become translucent, about 3 minutes.
Add Bertolli Rustic Cut Pasta Sauce, chicken broth, and fettuccine. Bring to a boil and then reduce to a simmer until pasta is cooked until al dente, about 15-20 minutes.
Stir in spinach and cook until the spinach is wilted. Add shrimp and mozzarella and parmesan cheese on top and let the cheese melt. Garnish with parsley and serve immediately.