Preheat oven to 325º. Brown sausage and drain well. Spread over bottom of greased 8 pie pan or quiche pan. Layer zucchini over sausage, then sprinkle scallions and seasonings over top.

Whisk eggs with half and half and pour over zucchini and sausage. Sprinkle with cream cheese cubes. Top with Mozzarella and Cheddar cheeses. Bake for 45 minutes until top is lightly golden or knife inserted in center comes out clean.