1 cup all purpose flour
1/4 teaspoon baking soda
1/4 teaspoon kosher salt
6 tablespoons butter, melted and cooled
1/4 cup sugar
1/2 cup light brown sugar
1 teaspoon vanilla
1/4 cup cashews, cut in half
1/4 cup dark chocolate chips
Flakey sea salt, such as Maldon
Adjust rack to middle position and preheat oven to 325°F. Line a baking sheet with parchment paper.
In a small bowl, whisk together flour, baking soda, and salt; set aside. In a large bowl, whisk together melted butter, sugar, and brown sugar. Whisk in egg and vanilla. Change to a wooden spoon and stir in flour mixture until just combined. Stir in chocolate chips and cashews.
Use a cookie scoop to drop dough by rounded tablespoon onto prepared cookie sheets. Sprinkle cookies with sea salt. Bake until golden, about 12 minutes. Let cool for 5 minutes then transfer to a wire rack to finish cooling.