• Preheat your oven to 400°F (200°C) for 10-15 minutes.
• Take a large bowl and mix the almond and coconut flour with salt.
• Add the whisked eggs and melted butter into the same bowl and mix everything well into a dough.
• Let the low carb dough ball sit for about five minutes. Then, take the dough and press it into a 9-inch pie dish using your hands.
• Par-bake the dough for 15 to 20 minutes, and then take the crust out.

To Make The Filling

• Use a skillet to cook the bacon strips over medium-high heat.
• Next, sauté the chopped onions for about two minutes in the same skillet; the fat from the bacon you cooked will act as a good lubricant and flavor enhancer. Add some frozen spinach to the mix, or try to go for fresh if possible. Sauté both of these vegetables until the spinach is fully wilted and the juices are gone.
• Transfer this easy keto quiche mixture to a mixing bowl and let it cool for about 10 minutes.
• Add the bacon, salt and pepper, heavy cream, cheddar cheese, and eggs. Stir all of these elements together to combine and form a perfect keto quiche filling.

Prepare the Quiche

• Pour the filling/egg mixture into the pie crust once you remove it from the oven. Make sure to settle the filling so everything is relatively even across the quiche surface.
• Bake the quiche for between 40 or 45 minutes at 375°F (190°C); you may want to set this temperature and let the oven cool down for five minutes before popping the quiche inside.
• Slice it into eight pieces (or whatever number you prefer), and enjoy your keto quiche!