Mix together beef, egg, onion, garlic, salt black pepper and fennel seed. Press mixture into a 9-inch pie plate to form a shell.
Preheat oven to 375 degrees. Bake pie shell 15 minutes, then pour off fat (if any).
Mix together tomatoes, red pepper, oregano, basil, and salt and pepper to taste. Spread tomatoes over pie shell. Top with mozzarella cheese.
Cook sausages 5 minutes, drain, and slice into 1/2-inch rounds. Arrange sausages over cheese. Sprinkle with 1/2 tsp oregano then with Parmesan cheese.
Bake additional 15 minutes, then cut into 6 pie-shaped wedges and serve piping hot.