
Preheat your oven to 350 degrees F. Grease the bottom and sides of a 9-inch pie plate with butter.
Cook the bacon until crisp and chop it. It's easy to cook it in the microwave in two batches.
In a medium bowl, whisk together the eggs, heavy cream, white pepper, and cayenne pepper.
Fold in the chopped cooked bacon, onions, and grated cheese. Pour the mixture into the prepared pie plate and gently mix to evenly distribute the bacon pieces.
Bake until the quiche is puffed and golden, and a toothpick inserted in its center comes out clean, 30-40 minutes.*
Cool the quiche for 30 minutes in the pan on a cooling rack, then slice it into 8 slices and serve.