These Valentine's day cookies are very easy to make despite looking top-dollar and intricate! They still have their classic vanilla-sugary flavor and crisp, soft texture.
Place the softened butter in a large mixing bowl. Use a handheld mixer to beat the butter until it becomes light in color and creamy in consistency.
Add the sugar and beat on medium speed for about 3 minutes. The sugar will start to dissolve.
Next, add the egg yolks and vanilla extract. Mix them in for roughly a minute.
Finally, add the sifted flour and baking powder. Keep mixing until you have a uniform dough, but don't overmix it. You can stop when you cannot see any more flour.
Shape the dough into a 2-inch disc. Wrap the cookie dough in plastic or saran wrap. Then, leave it to rest for 30 minutes inside the fridge.
Shape the cookies
Preheat the oven to 320°F (160°C).
Cut out two large sheets of non-stick baking paper. You can make each the size of your baking tray or cookie sheet.
Add the rested and chilled dough between the two sheets. Then, roll it out until it becomes roughly 1/5-inch (5mm) in thickness. See notes on rolling dough between sheets.
Once your dough is rolled, cut out large heart-shaped cookies. Make sure to leave about 2 inches of space between each. This will prevent them from merging in the oven while they are baking.
Remove the dough between the heart-shaped cookies.
Then, slide the baking paper (with the shaped cookies) onto the cookie sheet.
Bake and cool the cookies
Bake the cookies for roughly 10-12 minutes or until they start turning golden brown on the edges.
Remove the cookies from the oven and leave them to cool completely on a cooling rack.
Make the icing
Whisk together 4 cups of powdered sugar with the water. Keep whisking until you have a lump-free uniform mixture.
Then, add the meringue powder, vanilla extract, and salt. Whisk them in well.
Divide the frosting between two bowls. Color one of these bowls with light-pink food coloring. Set it aside.
Take the other bowl and divide its frosting between two bowls. One can be colored with red food coloring, and the other can be left white.
Add the red and white icing into two separate piping bags fitted with small-tipped nozzles.
Decorate the cookies
To start, outline the heart-shaped cookies with white icing. Make sure it dried slightly before flooding the cookie.
Next, add the light pink icing using a spoon. Spread it over the cookie so it covers the entire surface.
While the pink icing is still wet, add horizontal lines of red and white icing. You can add as many as you'd like. Alternate between the red and white lines.
Next, use a toothpick or needle. Drag it vertically across the wet icing. You will see a beautiful pattern forming. You can space these "drag lines" about an inch apart.
Turn the cookie around. Make draglines in the opposite direction between the initial lines. This will create a beautiful elaborate pattern on the heart-shaped cookie.
Leave the icing to dry for an hour or so. Then, store them in an airtight container.