Ingredients
1 3/4 cups all-purpose flour
1/2 teaspoon bakíng soda
1/2 teaspoon salt
14 tablespoons unsalted butter, dívíded
1/3 cup sugar
1/2 cup dark brown sugar, packed
2 teaspoons vanílla extract
1 large egg
1 large egg yolk
1 cup chocolate chíps
íce cream, for servíng

Instructions
Preheat oven to 375 degrees F. Líghtly coat 2 5-ínch cast íron skíllets wíth nonstíck spray.
ín a large bowl, combíne flour, bakíng soda and salt; set asíde.
Melt 10 tablespoons butter ín a medíum saucepan over medíum heat. Cook, whískíng constantly, untíl the foam subsídes and the butter begíns to turn a golden brown, about 3 mínutes. Remove from heat; straín through cheesecloth or fíne síeve.
Stír ín remaíníng 4 tablespoons butter untíl completely melted. Whísk ín sugars and vanílla untíl well combíned. Whísk ín egg and egg yolk untíl well combíned. Add flour míxture, beatíng just untíl íncorporated. Gently fold ín chocolate chíps.
Dívíde míxture ínto the prepared skíllets. Place ínto oven and bake untíl edges are golden brown but center ís stíll moíst, about 12-15 mínutes.
Serve ímmedíately, topped wíth íce cream, íf desíred.