
1 teaspoon olive oil
3 tablespoons finely chopped onion
1½ teaspoons minced garlic
2 cups fresh spinach, coarsely chopped
¼ cup ricotta cheese
¼ cup cubed fresh mozzarella cheese
2 tablespoons freshly grated Parmesan cheese
2 medium skinless, boneless chicken breast halves
Salt
Freshly ground black pepper
3 ounces thinly sliced prosciutto