A Frittata Isn’t Just For Breakfast—It Also Makes A Tasty And Substantial Dinner Choice! Sautéed Mushrooms, Onions, And Peppers Create The Foundation Of Flavor In This Dish, While The Feta Cheese Provides A Salty Tang To Cut Through The Richness Of The Eggs. The Finishing Touch Of This Frittata Comes From A Couple Of Minutes Under The Broiler To Allow The Top To Caramelize And Turn Golden Brown. If You Don’t Have A 12" Oven-Safe Skillet, You Can Use A Smaller One, But It Will Need A Longer Time In The Oven.