Step 1

1. Grease a 9-inch x 13-inch baking dish with nonstick spray.  Arrange the sliced bread in the dish.  Set aside.
2. In a medium bowl, whisk together the eggs, sugar and vanilla.
3. Stir in milk until well blended.
4. Pour the milk mixture over the bread in the baking dish.  Turn the bread slices to coat well.
5. Tightly cover the baking dish and refrigerate overnight.

Step 2

1. Preheat the oven to 375°F.
2. In a medium bowl combine the flour, brown sugar and cinnamon. 
3. Cut in the margarine until the mixture resembles coarse crumbs.
4. Remove the baking dish from the refrigerator and uncover.  Turn the bread slices over.
5. Scatter the blueberries over the bread, then evenly sprinkle the crumb mixture over the top.
6. Bake 40 minutes until golden brown.
7. Serve hot with additional blueberries and maple syrup.