Preheat oven to 375 degrees F.
In a skillet over medium high heat melt 1 tablespoon of butter and add onions. Sauté for 5-7 minutes until onions are translucent.
In a bowl add eggs, heavy cream, nutmeg, salt and pepper. Whisk together.
Lightly spray a 9-inch pie plate, quiche pan, or 11x7 casserole dish with non-stick spray.
Pour the egg mixture into the dish.
Sprinkle the cooked onions, bacon, and cheese. Use a fork to lightly mix together. Top with chives.
Place in the oven and bake for 35-40 minutes or until you can jiggle the pan and the quiche doesn’t shake in the center. Remove and let cool for about 5 minutes before cutting and serving.