Shamrock Nanaimo Squares are beautifully green and just in time for St. Patrick’s Day! Add mint extract to the creamy, green filling and make your ‘Luck of the Irish’ kiss more memorable!
Prepare a 9X9" baking dish by lining it with parchment paper. Set aside.
In a sauce pan, over medium heat, bring the butter, sugar, and cocoa to a low boil. Remove from heat, and whisk in the egg. Next, add the graham crumbs and coconut. Stir with a spatula to combine.
Press the mixture into the bottom of the prepared baking dish. Be sure to get into the corners. Use the bottom of a flat-base drinking glass to press the crumb mixture evenly.
Set the baking dish aside.
Next, whisk together the butter, confectioner's sugar, milk, mint extract, and green food colouring. Whisk until creamy and lump-free.
Spread the icing mixture evenly over the crumb mixture. Place the baking dish in the refrigerator until the next step is ready.
In a double boiler, on a low simmer, melt together the butter and the dark melting chocolate until smooth.
Gently smear the chocolate over the icing mixture. Sprinkle with St. Patrick's Day candies if using.
Transfer baking dish to the refrigerator for 1 hour to set.