Gingerbread French Toast Casserole

2 Preheat oven to 350 F. Grease a 9x13 inch baking pan.
0 In a large bowl, whisk together milk, molasses, sugar, cinnamon, ginger, all spice, cloves, nutmeg, vanilla extract. and salt. Add flax seeds and tapioca flour then whisk until there are no lumps. Let the mixture sit for a few minutes until it thickens.
1 Place cubed bread in a large mixing bowl, then pour milk mixture on top. Stir to combine, and let sit for 30 minutes (or up to overnight), tossing halfway through until bread is coated on all sides. Mix in fresh cranberries if using.
3 Cover with foil and bake for 20 minutes. Remove foil then continue to cook for 20 more minutes. Serve warm dusted with powdered sugar and/or a drizzle of maple syrup on top.