Ingredients
½cupunsalted butter
½cupshortening,not butter flavored
1⅔cupsugar
1tspbaking soda
1tspcream of tartar
⅛tspsalt
½tspvanilla
3egg yolks
1¾cupflour
Preparation
Preheat the oven to 300 degrees F.
Cream the butter and shortening on medium until combined. Add the sugar, baking soda, cream of tartar and salt. Continue beating until fluffy, scraping the sides of the bowl as needed.
Add in the egg yolks and vanilla until combined. Beat in the flour, a little bit at a time.
Divide into 24 even pieces and roll into balls.
Bake for 15 to 17 minutes or just until set. Cool on the cookie sheet for about 3 minutes and cool completely on a wire rack.
Serve with coffee, and enjoy!