Skillet Lemon Souffle - cooking recipe

Ingredients

5 large eggs, separated
1/4 teaspoon cream of tartar
2/3 cup granulated sugar (4 2/3 ounces)
1/8 teaspoon table salt
1/3 cup lemon juice, squeezed from 2 to 3 lemons
1 teaspoon grated lemon zest
2 tablespoons unbleached all-purpose flour
1 tablespoon unsalted butter
confectioners' sugar, for dusting

Preparation

Adjust an oven rack to the middle position and heat the oven to 375\u00b0F (190\u00b0C). Using an electric mixer, whip the egg whites and cream of tartar together on medium-low speed until foamy, about 1 minute. Slowly add 1/3 cup of the granulated sugar and the salt, then increase the mixer speed to medium-high, and continue to whip until stiff peaks form, 3 to 5 minutes. Gently transfer the whites to a clean bowl and set aside.
Using an electric mixer (no need to wash the mixing bowl), whip the yolks and the remaining 1/3 cup sugar together on medium-high speed until pale and thick, about 1 minute. Whip in the lemon juice, zest, and flour until incorporated, about 30 seconds.
Fold one-quarter of the whipped egg whites into the yolk mixture until almost no white streaks remain. Gently fold in the remaining egg whites until just incorporated.
Melt the butter in a 10-inch ovenproof (not nonstick) skillet over medium-low heat. Swirl the pan to coat it evenly with the melted butter, then gently scrape the lemon souffle batter into the skillet and cook over medium-low heat until the edges begin to set and bubble slightly, about 2 minutes.
Transfer the skillet to the oven and bake the souffle until puffed, the center jiggles slightly when shaken, and the surface is golden, 7 to 11 minutes. Using a potholder (the skillet handle will be hot), remove the skillet from the oven. Dust the souffle with the confectioners' sugar and serve immediately.
Variation: Chocolate-Orange Souffle. Follow the recipe, substituting 1 tablespoon grated zest from 1 orange for the lemon zest, and 1/3 cup orange juice for the lemon juice. Gently fold 1 ounce finely grated bittersweet chocolate (about 1/2 cup) into the souffle batter after incorporating all of the whites in step 3.