Peanut-Butter Sand Tarts

Sand tarts (a decorated crispy, flat butter cookie) have been a Frey-family favorite Christmas cookie for many years. Sand tarts are basically creamed butter and white sugar stabilized with a little egg and flour. While pursuing a reliable recipe for a Nutter Butter-like cookie dough that could be rolled and cut, I realized that when I made the cookies thin enough they baked to that same flat, crispy form with a mild peanut butter flavor.

• 3/4 c A.P. flour
• 1/2 tsp baking soda
• 1/8 tsp salt
• 1/4 c unsalted butter (room temperature)
• 1/2 c light brown sugar, packed
• 1/2 c creamy peanut butter
• 1 egg
• 1/4 tsp vanilla extract