First, butter the bottom and sides of a 13x9 pan.
Next tear up the offending loaf into small bite sized pieces and place them in the pan. As you add bread to the pan, sprinkle in a few blueberries here and there. About 1 cup's worth.
Next, whisk together the milk and eggs until thoroughly combined.
Add the cinnamon, maple syrup, and nutmeg. Whisk well again.
Pour the liquid mixture over bread. Try to make sure you even pour it over all the chunks.
Sprinkle with the remaining blueberries.
Cover and and pop in the fridge overnight.
The next morning, preheat your oven to 350 degrees F.
Remove the French toast from the fridge and let it warm to close to room temperature.
Bake for 35-40 minutes uncovered.
Remove from the oven and serve with whipped cream, a drizzle of maple syrup, or whatever else sounds good to you.