Follow steps 1 through 3 of package directions for preparing biscuit mix.
Scoop biscuit dough using #20 scoop, and deposit into melted butter.
Coat biscuit lightly in butter using brush. Mix sugar and cinnamon. Roll buttered dough in cinnamon-sugar mixture. Pinch dough randomly in cinnamon-sugar several times to incorporate cinnamon-sugar throughout dough.
Place biscuits next to each other in greased 12x18x2 1/2-in baking pans.