Made for breakfast today and DH loved it for flavor, I loved it for ease in making, the flavor was good to me but next time I might use Swiss cheese just as a personal preference as feta has always had a strong taste to me. Didn't use the tarragon as didn't have any but did sprinkle with Paprika for color before putting in the oven felt the flavors were good. Made for PRMR and was a good chose.
Love this recipe, even though I used broccoli instead since we had no spinach at the time. I just precooked it a little in the microwave first, then sauteed with onions, butter, tarragon, and turmeric. (I love the Persian ones, and turmeric is so darned good for all.) My husband gave it 5/5 stars! Thanks for helping learn about fritatas! (I posted my own photo of the broccoli version.)