Step #5 Arrange about one-fourth of the biscuit pieces and one-fourth of the blueberries in an even layer in pan.
Step #6 Place blueberries between biscuit pieces, creating a mosaic effect.
Step #7 Repeat three more times with remaining biscuits & blueberries, covering blueberries of one layer with biscuits in next layer to avoid a column of blueberries.
Step #8 In saucepan mix sugar, margarine, vanilla, cinnamon & the extra I c blueberries.
Step #9 Bring to a boil, reduce heat.
Step #10 Cook, stirring frequently until sugar is dissolved and margarine melted.
Step #11 Pour over biscuits in pan.
Step #12 Bake in a preheated 350 degree F oven for 65 mins or until done.