Ingredients
Method
- Cook sausage in a skillet over medium-high, breaking it up, until browned, about 8 minutes. Add onion and bell pepper; cook until softened, 5 minutes. Drain fat and cool slightly.
- Whisk eggs, milk, mustard powder, salt, and pepper. Add bread cubes and fold to coat. Let soak at least 10 minutes at room temperature, or cover and refrigerate overnight.
- Grease a 9×13-inch baking dish. Layer half the soaked bread, then the sausage mixture, then 1 cup cheese. Top with remaining soaked bread, any leftover custard, and the last 1 cup cheese. Press down gently.
- Preheat oven to 350°F. Bake until puffed, golden, and set in the center, 45 to 50 minutes. Rest 5 minutes, sprinkle with chives, and serve.
Notes
For the best texture, assemble the night before and refrigerate so the bread fully absorbs the custard. If baking right away, let the assembled casserole sit at room temperature for 15 minutes before putting it in the oven.
