01 -
Melt 1 tablespoon butter in a skillet over medium heat. Add the pecans and a pinch of salt, then cook for 3-4 minutes, stirring often, until fragrant. Cool completely, then roughly chop most of them.
02 -
Add 10 tablespoons butter to a light-colored saucepan over medium heat. Cook, stirring often, until it foams and the milk solids turn amber, about 4-6 minutes. Pour into a mixing bowl and cool for 10 minutes.
03 -
Stir the brown sugar and granulated sugar into the browned butter. Add the egg, egg yolk, and vanilla, then beat by hand for about 45 seconds until glossy.
04 -
Whisk the flour, cornstarch, baking soda, and salt in a separate bowl. Fold into the butter mixture until a few dry streaks remain, then fold in the chopped toasted pecans.
05 -
Let the dough rest at room temperature for 20 minutes so the flour hydrates and the browned butter firms slightly. Heat the oven to 350°F and line baking sheets with parchment.
06 -
Scoop 2-tablespoon portions onto the baking sheets, spacing them about 2 inches apart. Press one pecan half onto each dough ball and sprinkle lightly with flaky salt if using.
07 -
Bake for 10-12 minutes, until the edges are golden and the centers still look slightly soft. Cool on the pan for 5 minutes, then transfer to a wire rack.