Preheat the grill or oven to 350°F.
Lightly grease a 9x13-inch casserole dish.
Spread the cubed bread evenly across the bottom of the dish, then layer the sausage over the top.
In a mixing bowl, whisk together the remaining ingredients until well combined.
Pour the mixture evenly over the bread and sausage, making sure everything is well coated.
Bake for 40-45 minutes, or until the casserole is set and the top is golden brown.
Allow it to cool slightly, then serve warm.