Ingredients

3/4 cup all-purpose flour, plus more for surface 

3/4 cup graham or whole-wheat flour 

1/2 teaspoon baking soda 

1/4 teaspoon baking powder 

1/2 teaspoon ground cinnamon 

Coarse salt 

6 tablespoons unsalted butter, softened 

1/2 cup packed dark-brown sugar 

1 large egg 

Preparation

Preheat oven to 350 degrees. Whisk together flours, baking soda, baking powder, cinnamon, and 1/4 teaspoon salt. Beat butter and sugar with a mixer on medium speed until pale and fluffy. Mix in egg. Add flour mixture, and mix to combine.

Divide dough in half. Roll out each dough half to 1/8-inch thickness on a lightly floured surface. Refrigerate until firm, about 30 minutes.

Cut out eighteen 2 1/2-inch-square crackers, using a fluted cookie cutter or a knife. Transfer to baking sheets, spacing 1/2 inch apart.

Bake, rotating sheets halfway through, until golden brown, about 10 minutes. Transfer sheets to wire racks, and let cool.