Step 1

Preheat oven to 350 degrees. In a medium bowl, whisk together flour, cornmeal, and salt; set aside.

Step 2

In a large bowl, using an electric mixer, beat butter and sugar until light and fluffy. Add egg and vanilla; beat until smooth. With mixer on low, gradually add flour mixture, mixing just until combined.

Step 3

Drop dough by heaping tablespoons, about 2 inches apart, onto two large baking sheets; flatten slightly with floured fingertips. Bake until edges are golden, 14 to 16 minutes, rotating sheets halfway through. Transfer cookies immediately to a wire rack; let cool completely.