Set a rack in the upper third of the oven; preheat to 450 degrees F. Whisk the eggs in a large bowl until foamy. Heat 1 tablespoon olive oil in a large nonstick ovenproof skillet over medium-high heat. Add the mushrooms and cook, stirring occasionally, until golden, 3 to 4 minutes. Reduce the heat to medium. Add the butter, scallions, parsley, tarragon, 1/4 teaspoon salt and a few grinds of pepper. Cook until the scallions are wilted, about 3 minutes.
Pour the beaten eggs into the skillet in an even layer and cook until they start browning, about 3 minutes; sprinkle with the cheese. Transfer the skillet to the oven and bake until set, about 5 minutes.
Meanwhile, combine the endive and tomatoes in a bowl. Add the lemon juice, the remaining 2 tablespoons olive oil, and salt and pepper. Toss and serve with the sliced frittata.
Tools You May Need
Photograph by Antonis Achilleos
Courtesy of Food Network Magazine
Tools You May Need
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