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                                    1/2 pound hot Italian sausage, removed from casings and crumbled  | 
                             
                         
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                                    1/2 pound sweet Italian sausage, removed from casings and crumbled  | 
                             
                         
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                                    1 1/2 cups sliced red onions  | 
                             
                         
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                                    1 1/2 tablespoons chopped garlic  | 
                             
                         
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                                    3/4 teaspoon fennel seeds  | 
                             
                         
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                                    1/2 teaspoon crushed red pepper  | 
                             
                         
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                                    1 (28-ounce) can whole peeled tomatoes, crushed by hand, with their juice | 
                             
                         
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                                    2 tablespoons tomato paste  | 
                             
                         
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                                    1 tablespoon chopped fresh oregano  | 
                             
                         
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                                    1 pound dry penne, ziti or mostaccioli  | 
                             
                         
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                                    1 1/2 cups fresh ricotta, or crumbled or coarsely grated fresh ricotta salata  | 
                             
                         
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                                    6 tablespoons chopped fresh basil leaves | 
                             
                         
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                                    Grated Parmesan, for garnish | 
                             
                         
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