cook the cover

A frittata is a flat round omelet with its filling stirred into the eggs before cooking. I like my frittatas dense in vegetables, almost like pies without crusts. Many things can be stirred into frittatas: sautéed onions, wilted greens, roasted peppers, sliced potatoes, mushrooms, even pasta. Frittatas can be served warm or at room temperature, plain or with a sauce, as a first course or as dinner. And they are great for sandwiches and as picnic food. Any filling should be cooked before being added to the eggs. For more flavor, vegetables can be browned or seasoned with herbs and spices. Although some recipes say to pour beaten eggs into the pan over vegetables after they have been cooked, I have better luck turning the frittata later when I beat the eggs with a little oil and salt, stir in the vegetables and any other ingredients such as herbs or cheese, and cook the frittata in a clean preheated pan. Cook frittatas over medium to medium-high heat. Any higher and the eggs will burn on the bottom. As the edges set, lift them away from the side of the pan and tilt the pan to let uncooked egg flow underneath. When the frittata is mostly set, place an inverted plate the same size or a little larger over the pan, hold them firmly together, and turn the pan upside down on top of the plate. (Protect the hand holding the plate with a towel or potholder.) Add a bit more oil to the pan and slide the frittata back in. Cook for another 2 or 3 minutes and then slide onto a plate. The frittata should be cooked through but still moist inside. Another way to cook a frittata is in the oven, as long as the pan you use is ovenproof. Preheat the oven to 350°F. Start the frittata on top of the stove, as above. After a couple of minutes, put the pan in the oven and cook until the frittata is set on top, about 7 to 10 minutes.