Preheat oven to 400 degrees F (200 degrees C). Spray 8 muffin cups with cooking spray.

In a bowl, stir together 1 tablespoon of cinnamon and the white sugar until evenly blended. Remove the biscuits from the packages, and cut into quarters. Drop a few biscuit pieces at a time into the sugar mixture, and coat thoroughly. Distribute the coated biscuit pieces among the prepared muffin tins (4 to 5 pieces per cup).

Place butter, brown sugar, and the remaining 1 tablespoon cinnamon in a microwave-safe glass or ceramic bowl, and microwave a few seconds until the butter has melted. Stir to blend, and drizzle about 2 tablespoons of the butter mixture over each cup.