Beat butter in a mixer until smooth. Add in sugar, vanilla and salt and continue to beat. With the mixer on low, add in the flour and mix until incorporated.
Wrap the dough in plastic wrap and refrigerate for about 30 minutes (or longer if you need!)
Roll the dough out and use a biscuit cutter to make circles.
Bake in a preheated oven, 350 degrees for 15 to 20 minutes.