Cheesy Egg Soufflé Casserole

Follow our step-by-step guide on how to make Cheesy Egg Soufflé Casserole.

1. Step 1

   Begin by preheating your oven to a cozy 375°F (190°C).

2. Step 2

   While the oven warms up, take a moment to lightly butter a 9x13-inch baking dish, creating a non-stick haven for your delicious creation.

3. Step 3

   Next, transform your trimmed bread into delightful 1/2-inch cubes, layering half of them at the bottom of your prepared dish.

4. Step 4

   Generously sprinkle shredded Cheddar cheese over this bread base, followed by a cup of shredded Swiss cheese, creating a cheesy paradise.

5. Step 5

   Now, add the remaining bread cubes on top, building a hearty foundation.

6. Step 6

   In a separate mixing bowl, whisk together milk, eggs, onion powder, and Dijon mustard until everything is beautifully blended.

7. Step 7

   Pour this creamy mixture evenly over the layered bread and cheese, ensuring every piece is soaked in flavor.

8. Step 8

   Top it off with the remaining 1/2 cup of Swiss cheese, adding a final touch of indulgence.

9. Step 9

   Cover the dish with foil and let it rest in the refrigerator for at least 8 hours or overnight, allowing the flavors to meld into a harmonious blend.

10. Step 10

    The next morning, awaken your taste buds by combining cornflakes with melted margarine in a bowl, then spread this crunchy mixture evenly over the casserole.

11. Step 11

    Bake your masterpiece in the preheated oven, covered, for 30 minutes.

12. Step 12

    After that, uncover and let it bake for an additional 15 minutes, or until the top turns a glorious golden brown and crispy.

13. Step 13

    Enjoy the delightful aroma and the anticipation of a delicious breakfast casserole that’s sure to impress!.