For tinted cookies, add drops of gel-paste food coloring once the flour is incorporated.
Whisk together flour, baking powder, and salt in a large bowl. Beat butter and granulated sugar with a mixer on medium-high speed until pale and fluffy. Beat in egg and vanilla. Reduce speed to low. Add flour mixture, ground cinnamon, ginger, allspice, and pepper and beat until combined. Proceed with variations:Thumbprints and Ball CookiesShaped Icebox CookiesLayered Icebox CookiesGlazed Spritz CookiesCutout Cookies
If you'd like to try a variation, see what ingredients to add:
Basic Vanilla DoughChocolate Cookie DoughCitrus Cookie Dough