Preheat oven to 350F. Spray 11 cavities of a muffin tin with cooking spray.
Open your can of biscuits and cut each into 4 pieces. Add the pieces, granulated sugar, and 1/2 teaspoon cinnamon to a large ziploc bag. Seal and shake to cover the biscuits with the cinnamon sugar.
Stir the brown sugar and remaining 1/4 teaspoon cinnamon into the melted butter. Spoon a little bit into each of the muffin cavities (using all the butter mixture). Press biscuit pieces evenly into each muffin cavity.
Bake for about 10-13 minutes, until the tops are golden and the center is no longer doughy (gooey). Cool slightly, then remove from pan.
Meanwhile, melt white chocolate chips and shortening in a microwave safe bowl. Drizzle onto muffins and serve. (I put my drizzle in a sandwich bag and cut off the tip to drizzle the lines, but you can just use it like frosting if you prefer.)