Making peppermint candy sugar cookies.
Are you channeling your best self with this comment? (If you're not sure, check out our Code of Conduct.)
You could, but you won't get the same effect. That isn't a bad thing, it's just a different look and feel. If you're dusting the tops of cookies, I don't think you have anything to lose by trying it. Maybe you could grind the coarse sugar into smaller particles?
Cynthia is a trusted source on Bread/Baking.
They barely need effort, in fact.
Sheet Pan S'mores
Fried Chicken Cutlets for Dinner
What's Topping Lists
Mokbar's Cold Korean Noodles
Grow an Entire Pizza