First, make a basic wet mixture. Whisk butter until it’s creamy. Add sugar and vanilla extract. Mix well until the dough is well combined.
Divide the wet mixture into 3 equal amounts into separate bowls.
Shortbread bowl #1, add flour.
Sugar cookie bowl #2, add egg yolk and smix. Then combine flour. If you want chocolate flavor, you can add a pinch of cocoa powder as well.
Spritz cookie bowl #3, add egg white and almond extract first and mix them. Then add flour and ground almonds.
Place the dough from bowls #1 and #2 between parchment paper and roll the dough with a rolling pin. Make Scottish shortbread dough's thickness at 1cm and rectangle shape. Sugar cookies dough is at 0.3-0.5mm thickness. Place all the dough in the refrigerator for at least 45 minutes to 1 hour.
Put almond cookie dough in a piping bag with a big star tip.
Make 24 star shaped cookie and bake at 350℉/180℃ for 8 minutes. After cookies are baked, put chocolate on top.
Cut Scottish shortbread dough into 12 rectangular bars. Make 6 little holes on top.
For sugar cookies, use your favorite cookie cutters and cut the sugar cookies dough into your favorite shapes.
Bake the cookies at 350℉/180℃ for 10 minutes.
If you want to make your sugar cookies very fancy, you can add strawberry jam or melted chocolate in between and make a sugar cookie sandwitch.Add sprinkle of powder sugar.