Ingredients
- 1 cup unsalted butter, at room temp
- 1½ cup white sugar
- 2 eggs
- 2½ cups flour
- 1 tsp cream of tartar
- 1 tsp baking soda
- ½ tsp salt
- 2 Tbsp lemon zest
- 2 Tbsp lime zest
- coarse sugar for rolling cookies in
Instructions
- Preheat oven to 350º.
- Using a mixer, beat the butter and white sugar at medium speed until light and fluffy. Add eggs and continue to beat for three more minutes.
- Combine the dry ingredients in a large mixing bowl and stir well. Add to the butter/sugar mixture and beat at medium speed for several minutes. Add zest and continue to beat for two more minutes.
- Roll dough into 1½" balls. Coat with coarse sugar. Place on a cookie sheet and bake for eight to ten minutes. Remove from pan and cool on cooling rack.