Cut out dough using a 2 1/2 - inch doughnut cutter or pastry ring or drinking glass and using a 7 / 8 - inch (22 mm) ring for the center whole. (carrotsandspice.com)
Cut dough using a 2 1/2 - inch round doughnut cutter. (healthyflour.com)
You don't even need a doughnut pan or special doughnut cutter for this recipe. (homecookingadventure.com)