Transfer pear filling to prepared dish.Dot with diced butter. Cover dish with foil.
Bake until pears are almost tender, about 50minutes.
Remove dish from oven; stir driedblueberries into pear filling.
Place biscuitsatop filling. Continue to bake uncovereduntil filling is bubbling thickly, biscuits arepale golden, and tester inserted into biscuitscomes out clean, about 35 minutes longer(biscuits may look cracked). Cool 30 minutes.