Cream the butter until pale yellow, then add the powdered sugar and cream until mixed. Add vanilla and cream to combine.
Work in the flour, kneading the dough on a board until smooth. Spray a ceramic shortbread cookie pan with cooking spray and then press the dough into the pan.
Prick the entire cookie with a fork and bak at 325 degrees until lightly golden brown, about 30-35 minutes.
Let cool exactly 10 minutes in the pan, then loosen edges with a butter knife and invert onto a cutting board. If you wish to cut the shortbread along the cookie lines, do it while still warm - if you try to cut it after it's cooled it will crumble.
Cool ceramic pan completely before washing.
Recipe by Cooking With MicheleĀ® at https://cookingwithmichele.com/2018/01/shortbread-cookies/