Preheat your oven to 350°F and line a baking sheet with parchment paper.
In a bowl, mix together all the dry ingredients and set aside.
In a large mixing bowl, beat the butter and brown sugar with a hand mixer until light and fluffy, about 4 minutes.
Add the egg yolk to the butter mixture and mix well.
Mix in the cottage cheese and vanilla extract until combined.
Slowly add the dry ingredients to the wet mixture and mix until just combined.
Use a 1.5 tablespoon scoop to portion out the dough onto the prepared baking sheet. Flatten each cookie slightly.
Bake for 10-12 minutes until golden brown.
Let the cookies sit on the baking sheet for 2-3 minutes before transferring them to a cooling rack.