4 egg white fritata Recipes

butter, divided, scallions, cut into thin slices (white and green included), fresh spinach, stems removed and spinach washed, cut into strips (refer to note) or 10 oz frozen spinach (refer to note), dried tarragon or 1 1/2 tbsp chopped fresh tarragon, salt, divided, fresh ground black pepper, divided, eggs, olive oil, feta, crumbled (imported feta preferred)

egg whites, spinach, onion, diced, red bell pepper, cheddar, butter, olive oil, mushrooms, sliced

onion, yellow pepper, kale, tomatoes, tomato puree, egg whites, light cheddar cheese