Best Keto Quiche Recipe. This recipe for Keto Quiché is a flavorful way to enjoy this iconic Brunch dish while keeping to your Keto lifestyle. The dish is low-carb, high protein, and tastes great. One slice of this Keto Quiché with bacon, cheese, and spinach will satisfy your hunger for hours. Enjoy this delightful Keto Quiché with friends and family the next time you’re in the mood for a Keto Brunch.