How to Make It
Preheat oven to 325°F. Stir together brown sugar, tahini, butter, and eggs in a large bowl until smooth. Stir in flour, kosher salt, and baking soda. Spread mixture in a parchment paper-lined 8-inch square baking pan coated with cooking spray. Sprinkle batter with sea salt. Bake in preheated oven until browned and cooked through, about 25 minutes. Cool 10 minutes. Cut into 9 squares.