Preheat oven to 375 and place rack in center of oven.
Begin cooking bacon.
While bacon cooks, whisk together eggs, cream, a couple pinches of sea salt and a few turns of pepper.
Then chop greens and onion. Shred cheese.
When bacon is almost done cooking, add shallots to pan and sauté for five minutes, removing bacon as it's done cooking.
Set bacon and shallots on paper towels to absorb fat. Whisk onions, bacon, greens and cheese into egg and cream mixture.
Pour into pie crust of your choice. Bake for 40-45 minutes. I usually place pie tin on cookie sheet just in case quiche spills over the sides as it cooks.