Cut pastry into 6 strips; cut each in thirds. Brush with water; sprinkle with some cinnamon sugar. Fold each in half. Fit 3 pieces, folded ends up, in each of 6 lined muffin cups. Dust with remaining cinnamon sugar. Bake at 375 degrees for 25 minutes. Bring brown sugar and 1 tbsp. water to boil; pour over rolls.