Instructions

Preheat oven to 350°. Cook pasta according to package directions for al dente; drain.
Meanwhile, drain tomatoes, reserving juices; coarsely chop tomatoes. In a 6-qt. stockpot, cook and crumble sausage with onion, carrot, celery and garlic over medium-high heat until no longer pink, 6-8 minutes; drain. Stir in tomato paste, seasonings, chopped tomatoes and reserved juices; bring to a boil. Reduce heat; simmer, uncovered, 10 minutes.
Stir in beans and 1/4 cup each Parmesan cheese and parsley. Stir in pasta. Transfer to a greased 13x9-in. baking dish; sprinkle with fontina cheese and remaining Parmesan cheese.
Bake, covered, 20 minutes. Uncover; bake until cheese is melted, 10-15 minutes. Sprinkle with remaining parsley.
Freeze option: Cool unbaked casserole; cover and freeze. To use, partially thaw in refrigerator overnight. Remove from refrigerator 30 minutes before baking. Preheat oven to 350°. Bake casserole as directed, increasing time as necessary to heat through and for a thermometer inserted in center to read 165°.