4 cups (1 lb.) confectioners' (powdered or icing) sugar, sifted
3 tablespoons unsalted butter
1/2 cup (120 ml) milk
2 cups unsweetened desiccated coconut, finely ground
Preheat oven to 350 degrees F (180 degrees C) and place oven rack to middle position. Butter, or spray with a nonstick cooking spray, the bottom and sides of an 8 inch (20 cm) square cake pan. Set aside.
In a sift or whisk together the flour, baking powder, and salt. Set aside.
In bowl of electric mixer, beat the butter until soft. Add the sugar and beat until light and fluffy (about 2-3 minutes). Add eggs, one at a time, beating well after each addition. Scrape down the sides of the bowl. Add the and beat until combined.
With the mixer on low speed, alternately add the flour mixture and milk, in three additions, beginning and ending with flour.
Spread the batter into the prepared pan and smooth the top with an offset spatula. Bake in a preheated oven for approximately 25-30 minutes, or until a toothpick inserted in the center of the cake comes out clean.
Cool the cake in its pan on a wire rack for 10 minutes. Place a wire rack on top of the and invert, lifting off the pan. Re-invert. Once the cake has completely cooled cut it into 16 two-inch (5 cm) squares. Wrap the cake in plastic wrap and refrigerate for several hours or even overnight. The reason for doing this is that it is much easier (less crumbs) to coat a cold cake with frosting.
To assemble Lamingtons: Make a production line; put the 16 squares of cakes on a wire rack that is placed over abaking sheet (to catch the drips). Have ready the coconut on a large plate and the chocolate frosting. Spoon or the chocolate frosting over each square of cake, making sure you cover all sides. (It is best to do a few squares at a time.) With a small offset spatula or knife transfer the chocolate covered cake to the plate of coconut and roll the cake in the coconut, covering all sides. Gently transfer the lamington to a clean wire rack to set. Repeat with the rest of the cake squares. Once the Lamingtons have set, store in an airtight container for several days.
I give all the credit to The Joy of Baking, a totally amazing baking website. However, I could never get my frosting thin enough. I had to settle for rather lumpy Lamingtons. I wish mine looked like the picture above! Oh well, onward and upward.