No Bake Mint Chocolate Bars

Bahan-bahan (16 porsi)

• ½ cup (1 stick) butter
• ¼ cup granulated white sugar
• ⅓ cup unsweetened cocoa powder
• 1 large egg
• ¾ cup shredded coconut
• 2 cups graham cracker crumbs
• ¼ cup (½ stick) butter
• 2 cups powdered sugar
• 2 to 3 tablespoons milk
• 1 teaspoon peppermint extract
• green food coloring
• ⅔ cup chocolate chips or chopped chocolate
• 2 tablespoons butter