Sanitize all work areas, cutting boards, equipment and sinks used in the preparation of this recipe.
Place the desired number of 3-5/8" baking containers onto a flat sheet tray. Generously coat the containers with non-stick spray.
Carefully ladle Quiche Base into each container.
Evenly distribute roasted mushrooms, roasted peppers, feta, and chives into each container.
Bake in a preheated 325°F oven, low fan, for 10 minutes.
Rotate the pan and continue baking until the frittata has set, about 10 minutes more.
Remove from the oven and cool.
Place lid on container, label and store refrigerated.
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