Preheat oven to 350*F
In a preheated nonstick pan add olive oil
Once oil is hot add spinach, bell pepper, onion,& garlic
Saute on low heat for 8 minutes. Set aside
In a mixing bowl add eggs, sharp cheddar, mozzarella cheeses & milk
Add salt, black pepper, red pepper flakes. Whisk well
Next add sauted spinach mixture to the bowl. Mix everything well
Transfer mixture from bowl to baking dish & place in preheated oven
Remove baking dish after 45 minutes. Let cool then cut into triangular pieces
Serve 1 piece of our now ready Crust-less Spinach Quiche per plate