Grease a 9×13 baking dish with non-stick spray and warm up your oven to 350°F.
In a large bowl, beat the eggs, then mix in the milk and add salt if desired.
Fold in the toasted bread cubes along with the cheddar cheese to the egg mixture.
Add the warmed and sliced turkey sausage coins and stir everything together.
Transfer the mixture into your prepared baking dish and bake it for 30 to 40 minutes until the center is firm and the edges turn golden brown.
Let the casserole cool slightly before serving and enjoy a comforting breakfast!