Easy Orange Butter Cookies

"These Easy Orange Butter Cookies are crisp, buttery, and full of fresh orange zest. The dough mixes up quickly and holds its shape as it bakes without spreading. Just a simple cookie that’s perfect for cut-outs of any shape, whatever the occasion. granulated sugar – plus extra for coating (optional) finely grated orange zest – from 2 to 3 oranges cold salted butter – cut into cubes (get out of the refrigerator at least 15 minutes before using) all-purpose flour (plain flour) salt Optional: orange food coloring gel (1-2 drops)"