Ingredients
1 cup unsalted butter, softened1-1/2 cups sugar1/2 cup packed brown sugar2 large eggs, room temperature1-1/2 teaspoons grated lemon zest2 tablespoons lemon juice3 cups all-purpose flour1 teaspoon baking soda1/4 teaspoon salt1/4 teaspoon cream of tartar4 teaspoons coarse sugar
Preparation
Preheat oven to 350°. In a large bowl, cream butter and sugars until light and fluffy. Beat in eggs. Beat in lemon zest and juice. In another bowl, whisk flour, baking soda, salt and cream of tartar; gradually beat into creamed mixture.
Shape 1/4 cupfuls of dough into balls. Place 6 in. apart on greased baking sheets. Flatten to 3/4-in. thickness with bottom of a measuring cup. Lightly brush tops with water; sprinkle with coarse sugar.
Bake until light brown, 12-15 minutes. Remove from pans to wire racks to cool completely. Store in airtight containers.
