If using frozen spinach, thaw it completely and squeeze out as much moisture as possible with your hands or a clean kitchen towel to prevent a watery omelet. Make sure your bacon is sugar-free to keep the recipe strictly keto-friendly. You can substitute cooked breakfast sausage or chorizo for the bacon, keeping the same total amount. For a dairy-free version, replace the cream with full-fat coconut milk and omit the cheese, adding an extra 2 tablespoons of olive oil or avocado oil to maintain richness. To keep the texture tender, avoid overbaking and remove the pan from the oven as soon as the center is just set. Customize flavors with low-carb additions like diced bell pepper in small amounts, extra herbs, or a pinch of red pepper flakes without significantly increasing carbs.