Grease the bottom and sides of a 9 by 12 baking dish.
Place the bread in the dish, slightly overlapping each piece.
Whisk together the coconut milk, almond milk, maple syrup, eggs, vanilla, cinnamon, and nutmeg. Pour the mixture over the bread then scatter the cranberries all around.
Cover and bake for 30 minutes. Uncover and bake for an additional 30 minutes.
Make Ahead Tip: Prepare steps 2-4 up to 12 hours in advance. Store in the refrigerator and bake when ready.