Prep: Preheat your oven to 350°F (175°C). Lightly grease a baking dish.
Assemble: In the dish, layer bread cubes, sausage, peppers and sprinkle cheese over top.
Mix: In a bowl, mix together eggs and milk. Pour it over the bread mixture in the dish.
Bake: Place the dish in the oven and bake for about 45 minutes or until golden and set.
Serve: Let it cool slightly before cutting into squares and serving.