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.
Bake in a convection oven at 400°F 10-12 minutes or a standard oven 450°F 14-16 minutes. When baked in convection oven, rotate pan after 5 minutes of baking.
Allow biscuits to cool 5 minutes. Turn upside down on paper-lined pan, and turn biscuits right side up.