Preheat oven to 350 degrees F. Thoroughly grease a 10 inch tube pan. Mix sugar and cinnamon. Cut biscuits into quarters. Roll each piece in cinnamon sugar mixture. Arrange 1/4 of the biscuits and blueberries in pan. Repeat with remaining biscuits and blueberries. Covering blueberries in one layer with biscuits in next layer.
In saucepan, combine brown sugar, butter, vanilla, cinnamon and the additional cup of blueberries. Bring to a boil. Reduce heat and cook stirring frequently until sugar is dissolved and butter is melted. Pour over biscuits in pan. Bake for 65 minutes or until done.