Preheat the oven to 400 degrees . In a skillet, brown the beef over medium heat; drain off excess fat. Remove from the heat and stir in the barbecue sauce and brown sugar. Grease a 6-cup jumbo muffin pan and place a piece of biscuit dough in each cup, stretching the dough up the sides. Divide the beef mixture among the biscuit cups, sprinkle each with cheese and bake until golden, 10 to 12 minutes.