Heat oven to 375°F. Cook pasta according to package directions; drain. Stir together hot pasta; 1-1/2 c spaghetti sauce; ricotta cheese; mozzarella cheese; parsley; egg; salt; oregano; garlic powder and pepper in large bowl. Pour 1/2 c spaghetti sauce in bottom of 3-quart casserole; spread pasta mixture evenly over sauce. Top with remaining 1-1/2 c sauce; sprinkle with Parmesan cheese. Cover; bake 30 to 35 minutes or until hot and bubbly. 8 servings.