Preheat the oven to 350 degrees F. Prepare the pie pan with unbaked pie crust. Pre-bake the pie crust for 8 minutes (I always use pie weights or dry beans or rice on top of parchment paper to keep the crust from shrinking. After the 8 minutes, remove the pie, weights and parchment paper.)
Meanwhile, cook bacon, in a skillet. Once cooked, remove to a plate and chop. Remove most of the grease from the pan and add onion and spinach. Saute for 2 minutes. Add cheese, onion, spinach, and bacon to the bottom of the pie crust.
Combine the eggs, half and half, salt, and pepper in a blender, then pour the egg mixture into the pie.
Bake for 35 to 45 minutes until the egg mixture is set. Allow to cool for 5-10 minutes before slicing. Store leftovers, covered, in the fridge.
Make ahead Instructions: Make the recipe through step 2. Blend the egg mixture and store the pie and egg mixture separately for up to 2 days (depending on the freshness of your eggs). Add egg mixture to the pie and bake as instructed.Freezing Instructions: Allow it to cool completely then cover well and freeze for up to 2 months. To reheat, allow the quiche to thaw in the fridge overnight (if frozen) and bake at 350 degrees for 20-30 minutes or until warmed through.