1Heat oven to 375°F. In 10-inch skillet, crumble sausage. Cook over medium-high heat about 8 minutes, stirring frequently, until sausage is no longer pink; drain well. Stir in bell pepper, mushrooms and zucchini.
2In ungreased 11x7-inch (2-quart) microwavable dish, stir sauce mix (from Hamburger Helper box) and water until blended. Microwave uncovered on High 1 to 2 minutes or until sauce is thickened. Stir in uncooked pasta (from Hamburger Helper box). Add sausage and vegetables; mix gently to combine.
3In small bowl, mix ricotta, mozzarella and Parmesan cheeses. Spoon cheese mixture evenly over sausage mixture; spread evenly to cover noodles.
4Bake uncovered 40 to 50 minutes or until top is golden brown and sauce is bubbly.