03Grab a 12-inch nonstick skillet. Add the oil and warm over medium-high heat until mildly shimmering but not smoking. Have a spatula/spoonula at the ready. Pour egg mixture into the pan. Grab the spatula/spoonula and, in small circular motions, distribute the onions, chile, and cilantro evenly around the pan. This also helps move some of the uncooked egg down to the surface of the hot pan. Cover and cook for 2 1/2 minutes.04Grab a plate that's as big as your pan. Pull off the lid and look at your omelet. It might still look a little runny, but it shouldn't be super runny. If it is, then cover and cook 1 more minute. Slide the omelet, cooked side down, onto your plate. Then, holding the plate from underneath, put your pan over your plate, and flip so that the uncooked side lands on the pan. Cook, uncovered, another minute.05Slide onto serving plate, cut into 4, and serve.