How To Make These Amazing Toasted Coconut Brownies

Brownies:

• 1 stick (8 tablespoons) unsalted butter, plus more for the baking dish
• 2 cups semisweet chocolate chips 
• 3/4 cup loosely packed light brown sugar 
• 3/4 cup granulated sugar 
• 4 large eggs 
• 1 teaspoon vanilla extract 
• 1/4 teaspoon coconut extract 
• 1 1/4 cups all-purpose flour
• 1/2 cup sweetened coconut flakes 
• 1/2 cup chopped skinned almonds, optional 
• 1/4 teaspoon fine salt 

Frosting:

• 1 cup sweetened coconut flakes
• 1 stick unsalted butter, at room temperature 
• 1 teaspoon vanilla extract 
• 1/2 teaspoon coconut extract 
• 2 cups confectioners’ sugar, sifted 
• 2 to 3 tablespoons milk