Baked Sausage Ziti - Scott Pete

Ingredients

• 1/2 pound Scott Pete Polish Sausage , sliced into 1-inch pieces
• 3 cups ziti or other tube pasta, uncooked
• 1 stick butter or margarine
• 1 cup sliced mushrooms, about 4 ounces
• 1 green bell pepper, sliced thinly
• 2 1/4 cups milk
• 2 cups shredded cheddar cheese
• 1/2 cup grated Parmesan cheese
• 1/2 teaspoon pepper
• 1/2 cup chopped onion
• 1/2 cup all-purpose flour