1. Bring 4 qts water to boil. Meanwhile, heat oil or melt 1 1/2 T butter in medium skillet over medium-high heat. Add onion and cook until translucent, 3 minutes. Add garlic and cook 10 seconds. Add chicken broth and cook 2 minutes more. Add peas, cream and pepper. Bring to a boil; boil, stirring occasionally, 5 minutes. Add ham.
2. Meanwhile, cook ravioli according to package directions; drain. Toss in large heated bowl with cream sauce. Sprinkle with parsley.