Preheat oven to 350°F
Spray a 2.5qt casserole dish with cooking spray.
Chop up bread into 1-inch cubes. They don't have to be perfect! Add to casserole dish.
Chop up apples into small cubes. Add to casserole dish.
Add walnuts and mix up the ingredients so they're evenly distributed.
In a medium bowl, mix together the remaining measured ingredients with a fork until well combined.
Pour wet mixture over the dry ingredients in the casserole dish. Ensure all the bread is wet but it's okay if the tips are sticking out of the wet mixture once you've mixed it all together.
Place your casserole dish on a lined cookie sheet to catch any possible drips.
Bake for 45mins or until the bread springs back when you press the middle.
Serve hot alone or with ice cream! Pour caramel over top for an added boost of flavour.