1. Preheat the oven to 400 degrees.
2. Dice the onion and bacon.
3. Place the bacon in a 12-inch cast iron pan or oven proof skillet over medium-high heat.
4. Sauté for 3 minutes stirring occasionally.
5. Add the diced onion and sauté for an additional 10 minutes.
6. Meanwhile, place the eggs, coconut milk, Dijon, salt and pepper in a medium bowl and blend with a hand mixer for 2 minutes or until well combined.
7. Add the spinach to the bacon and onions and stir until wilted.
8. Add the egg mixture to the pan and stir to combine over heat for 1 minute.
9. Place the pan in the oven and bake for 10 minutes or until a knife inserted in the center comes out clean.
10. Cut into wedges and serve.