Lemon Cookies with Toasted Coconut Frosting

For the Lemon Cookies:

• 2 1/4 cups all-purpose flour
• 1/2 teaspoon baking powder
• 1/2 teaspoon salt
• 3/4 cup granulated sugar
• 2 tablespoons lemon zest
• 1 cup butter at room temperature, unsalted
• 1 egg large
• 1/2 teaspoon vanilla extract
• 1/2 teaspoon lemon juice fresh

For the Toasted Coconut Frosting:

• 1/2 cup butter at room temperature, unsalted
• 2 cups confectioners' sugar
• 1 teaspoon coconut extract
• 1 tablespoon coconut milk or regular milk
• 1 cup coconut for sprinkling on cookies, toasted