Easy Skillet Brownies

Heat oven to 350 degrees. In an ovenproof 10- or 11-inch nonstick skillet (preferably ceramic nonstick) set over medium-low heat, combine the butter, chocolate and salt. Let butter and chocolate melt, stirring occasionally. Turn off the heat.

Carefully whisk in sugar until smooth, then whisk in eggs and vanilla. Finally, whisk in flour until no streaks remain. Using a spatula, fold in the nuts, if using. Smooth top and sprinkle lightly with flaky sea salt if you like.

Bake until the top is set, the center is soft and the edges are firm and start to pull away from the pan, 20 to 27 minutes. (A toothpick inserted into the center will come out gooey.) Transfer to a wire rack to cool. You can serve these still a little warm and straight from the pan, with ice cream on top if you like. Or, let cool completely before slicing into wedges or bars.