This easy Gluten-Free French Toast Casserole is vegan and allergy-free! Eggless and dairy-free with a cinnamon streusel topping. You can bake this stress-free casserole right away or prep it ahead of time and refrigerate overnight so it's ready to bake in the morning! This cinnamon raisin French toast casserole is perfect for a holiday breakfast or brunch that will feed a crowd!
In a large bowl, combine the dairy-free milk, chickpea flour (or starch), nutritional yeast, sweeteners, cinnamon, and vanilla. Mix well to combine so there are no lumps.
Cube your gluten-free sourdough bread loaf into one-inch pieces. You can even rip the pieces with your hands for a more rustic irregular casserole.
Add the gluten-free bread pieces into the thick eggless custard along with the raisins or other add-ins you choose to use.
Mix the bread so all the pieces are fully coated in the custard and allow it to absorb the liquid for at least 2-4 hours, overnight is best. (You can bake it right away, but this is not recommended)
Prep the streusel crumb topping by adding the sweetener, flour, cinnamon, and cold butter to a small bowl and use a fork to mash together the crumb until clumpy. Place it in the fridge until you are ready to assemble the casserole.
Preheat the oven to 375˚F and lightly grease an 8x8 casserole dish with butter.
Dump the soaking bread mixture evenly into the greased casserole dish. Use your fingers to sprinkle on the additional streusel crumb to the top of the casserole.
Bake the French toast casserole in the oven for 30-35 minutes, until the top is crisp and golden brown.
Remove the casserole from the oven and allow it to cool for about 10-15 minutes before sprinkling the top with powdered sugar if desired, and serving.
Notes
The streusel crumb topping is optional and you can leave it out if desired.
Store leftovers covered in the fridge for about 5 days. You can reheat leftovers in the oven at 350°F for 10 to 15 minutes or heat individual servings in the microwave for a minute or two.
Freeze leftovers by wrapping individual servings in plastic wrap and foil or by tightly covering the entire casserole with plastic wrap and foil for up to 6 months. Allow the frozen casserole to thaw overnight in the fridge and reheat in the oven at 350°F for 10 to 15 minutes or heat the individual servings in the microwave for a minute or two.