Wash your hands well with soap and warm water for at least 20 seconds.
Wash pears, cut off ends, and remove the core, and then cut into ½-inch cubes. Add to 8 x 8 baking dish.
Wash blueberries if using fresh. Add blueberries to the baking dish with pears and top with cornstarch. Mix ingredients.
In a small bowl, add oats, applesauce, flour, brown sugar, and cinnamon and mix well. Sprinkle oat mixture on top of pear blueberry mixture. Place baking dish in oven and cook for 20 minutes until juices are bubbling and topping is browned.