The Best Cowboy Cookies

Ingredients

• 1 c. unsalted butter, melted until browned
• 1 1/2 c. light brown sugar, packed
• 1/2 c. granulated sugar
• 2 large eggs, at at room temperature
• 1 large egg yolk, at room temperature
• 2 1/2 t. pure vanilla extract
• 2 1/3 c. all-purpose flour
• 1 t. baking soda
• 1 t. ground cinnamon
• 1/2 t. salt
• 1 3/4 c. old-fashioned oats
• 3/4 c. sweetened flaked coconut
• 1/2 c. pecans or walnuts, roughly chopped plus more for decorating
• 12 oz. semi-sweet chocolate chips
• 1 t. flaky sea salt, if desired