This is the star cutter I used. Please see the notes section for how many cookies per cutter you will need for the cookie tree.
Place the butter and sugar in a medium bowl. Using a handheld mixer, blend the butter and sugar together at medium-high speed until light and creamy - about 2 minutes.
Add the yogurt, vanilla extract and almond extract to the butter mixture. Continue with the handheld mixer, blending at medium speed for about 1 minute.
Add half of the flour to the wet ingredients, blending at medium speed for 30 seconds, add the rest of the flour and blend at medium speed until all of the flour is incorporated.
Divide the dough into 3 portions, form each portion into a disc and wrap each disc in plastic wrap. Place the wrapped dough in the refrigerator for at least one hour or up to overnight.
Line 3 to 4 cookie sheets with parchment paper.
Remove one portion of dough from the refrigerator at a time. Place the dough on a lightly floured surface and roll it out to a ¼ inch thickness. Begin cutting out the star shaped cookies. Reroll the dough as many times as you need to; use as much of the dough as you can but try to handle the dough as little as possible. Place the cut-out cookies on the lined baking sheets.
Cover and place the cut cookies in the refrigerator for 30 minutes.
Preheat the oven to 350F. Once the oven has reached the desired temperature begin baking the cookies.***I place the cookies come out of the refrigerator, on a new room temperature tray, I do not bake them on the cold tray. The 2 smallest size cookies - cutters 1 and 2 - should bake 9 to 11 minutes - I had to remove the smallest cookies at 9 minutes and let the larger cookie bake a little longer. Once the edges begin to brown, they are done.***see notes section for more on cutter numbers and sizes The middle size cookies - cookie cutter sizes 3, 4, 5, and 6 - should bake 13 to 15 minutes. Remember the smaller ones will be ready before the larger ones, remove them as they start browning.
The larger cookies - cookie cutter sizes 7, 8, 9, and 10 - should bake 19 to 21 minutes. The smaller ones will start browning before the larger ones, remove them as they become ready.
Allow the cookies to cool completely before decorating them. ***The cookies can be baked on one day, stored in an airtight container and decorated the next day. I had enough dough left over after cutting out all of the cookies needed for the tree to cut a few more of sizes 1, 2, and 3 - about 10.