Heat oven to 400°.
Whisk flour, sugar, baking powder, and salt in a bowl.
Using the coarse side of a box grater, grate frozen butter into flour mixture; mix to combine.
dd buttermilk and, using your hands, gently mix ingredients until a soft dough forms.
Transfer dough to a lightly floured surface; pat into a 7" x 9" rectangle, about 2" thick. Using a 4" round cutter, cut out 4 biscuits, reusing scraps as needed.
Place biscuits on a parchment paper—lined baking sheet. Bake until golden, 18–20 minutes.
Stir melted butter and honey in a bowl; brush over hot biscuits.
Return biscuits to oven and cook until golden, 5 minutes more.