Step 1

Preheat oven to 350 degrees F (175 degrees C).

Step 2

Cook and stir bacon and sausage in a large skillet and over medium-high heat until evenly browned and bacon is crisp, about 10 minutes; drain on a paper towel-lined plate.

Step 3

Brush butter on the bottom and sides of a 9x13-inch baking dish. Sprinkle Parmesan cheese into the bottom of the baking dish and top with bacon and sausage. Spread Cheddar cheese over bacon and sausage.

Step 4

Beat cream, eggs, and half-and-half together in a bowl. Slowly pour egg mixture over cheese and sausage into the baking dish.

Step 5

Bake in the preheated oven until a knife inserted into the center of the quiche comes out clean, about 1 hour. Cool for 10 minutes before slicing.