Spinach Feta Frittata

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   ["Preheat oven to 350F degrees.", "Cook onion in olive oil until opaque in a medium skillet.", "Add mushrooms and cook for about 1 minute.", "Add the spinach and cook until warmed through.", "Grease a 9"" casserole dish with cooking spray.", "Put the vegie mixture in the bottom of the casserole dish.", "Add crumbled feta to the eggs and pour over.", "Top with mozzarella cheese.", "Bake at 350F for approx 30 minutes, or until the eggs are solid.", "Cool for about 5 minutes then cut into serving size squares."]

* Per serving · 4 servings · Values may vary.

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