Grilled Cheese Breakfast Casserole is the ultimate indulgent breakfast. This recipe will make mornings easy and will be a crowd pleaser!
For Holiday or Brunch mornings, you need an easy Breakfast Casserole to feed a crowd. Try my Ham and Cheese Casserole or my Breakfast Burrito Casserole.
Sabrina’s Grilled Cheese Breakfast Casserole Recipe
Comfort food at it’s finest for the day after New Years Eve celebrations or anytime you need an easy yet flavorful one dish breakfast for family and friends. We love breakfast at our house so this recipe will be an option for lunch or dinner as well as breakfast. Whatever time you want to eat this delicious casserole it will be ready to enjoy!
Recipe Card
Ingredients
- 1 pound pork breakfast sausage
- 18 large eggs , divided
- 4 tablespoons butter , divided
- 1 cup whole milk , divided
- 1/4 teaspoon kosher salt
- 1/2 teaspoon coarse ground black pepper
- 1/2 teaspoon ground mustard
- 12 slices Texas toast
- 12 slices American cheese
Instructions
- Preheat oven to 375 degrees.
- Cook the breakfast sausage in a large pan on medium high heat for 4-5 minutes or until browned well, breaking it apart as you cook it.
- Remove the pork and drain the fat.
- Add one tablespoon of butter to the pan on medium heat.
- Whisk 10 eggs with ¼ cup of milk, salt and pepper then add it to your pan.
- Scramble the eggs until just set.
- In a 9×13 pan line the first 6 slices onto the pan and top each piece of bread with a slice of cheese.
- Add in the sausage, then the cooked eggs and top with a piece of cheese.
- Mix the remaining 8 eggs, ¾ cups milk and ground mustard in a medium bowl then pour it over the pan gently.
- Top with the remaining slices of bread.
- Melt the remaining 3 tablespoons of butter and brush it onto the tops of the bread.
- Bake for 20 minutes, covered with foil.
- Remove the foil and bake an additional 20 minutes.
Nutrition
Want to save this recipe? Create a free account to easily save your favorite recipes
Sabrina’s Tip
Let the casserole rest for 10 minutes or so after baking before slicing. This gives the custard time to fully set, making it easier to cut clean portions while keeping the inside creamy and the top crisp.
Table of contents
About this Recipe
Everyone will love this buttery grilled cheese sandwich filled with scrambled eggs and sausage. The casserole has a fairly standard base custard except we also add scrambled eggs to the mix so it bakes together and has additional egg pieces baked in. Plus the top bread isn’t soaked through so it stays crispy and buttery, the perfect combination of textures.
Can this be made ahead of time?
One of the best things about breakfast casseroles is a clean kitchen the day you serve it because you made it ahead of time. You’re going to thank me for this when you’re tired after a fun evening out or working late and everyone is hungry. All you need to do in the morning is take your Grilled Cheese Breakfast Casserole out of the refrigerator, bake and serve it. And, of course, have your second cup of coffee. Served warm and bubbly, it’s the kind of meal that feels both familiar and indulgent.
How To Store
- Serve: Allow the casserole to set up for 10 minutes or so before serving. The casserole will continue to cook when removed from the oven so allow it to set up so servings are not runny. Just make sure that the middle of the casserole is cooked and piping hot like the edges.
- Store: When making the casserole ahead to be served within 2-3 days or less, wrap tightly with saran wrap and then cover with tin foil. Don’t forget to remove the wrap prior to baking! To create individual portions, wrap in saran wrap or zip lock bags. If you have leftovers, you may use baggies or saran wrap to store in the refrigerator for up to 1 week.
- Freeze: You may freeze your casserole up to 1 month ahead of time. Consider using a disposable tin foil container. Wrap as tightly as possible with saran wrap and then cover with tin foil lid or well crimped edges to dish to prevent freezer burn.
Variations
- Sausage: Any variety of bacon, sausage, seasoned burger or chicken will work well with this casserole.
- Cheese: Select cheeses that melt well, like mozzarella, cheddar, gruyere, provolone.
- Vegetables: Dice small and scramble with your eggs. spinach, mushrooms, peppers (green, red, yellow, orange, jalapeno), minced onions and garlic.
- Breads: Choose bread that is thick and has substance and won’t turn to mush. Consider slicing the bread yourself. sourdough, light rye (use pastrami and provolone), whole grains (flavorful with veggies). You can also use croissants in this, just be sure to leave enough of the top croissant out of the custard so it can crisp up, and to leave it cut side up so you can brush with butter.
Related Recipes
More Delicious Breakfast Casseroles
Photos Used In Previous Posts
I love the looks of this casserole, but how does it make 12 servings when it looks like 6 sandwiches?
Hi Carla, yes this casserole absolutely looks like six sandwiches, and in the photos, I can see it’s reflected that way. If portioning this delightful casserole with other sides, cut each sandwich in half. However, if this is the main course, keep the bread whole and serve as such. That would double the calories of the recipe (890 Calories, 40g Carbs, 50g Protein, 58g Fat, etc.
Made this for breakfast this morning, using sourdough bread and ground turkey seasoned to taste like sausage. Delish!!!!!!! Please keep the yumminess coming, Sabrina.
You got it Cheryl! Thanks for the kind words. Glad you enjoyed the casserole!
Do you not butter the bread that goes in the bottom of the pan–buttered side down of course. Thanks
You definitely can. Enjoy!
Love this twist on a classic sandwich! Looking forward to starting my day off right with this tomorrow, indeed!
Yay!! Thanks for the 5 stars, Sara.
My family loved it! I’m going to try adding veggies next time. Thanks for sharing!
You’re welcome, Allison.
This is a great idea! Does it work the same way if you cut the bread into cubes ahead of time?
They might soak in the mixture a bit more but it should still work. Enjoy!
I haven’t made this yet (New Year’s Day?), but it is positively genius!
Thanks, Cheryl.
Were do I. Find my saved recipes.
Make sure to be logged into the site (there’s a login button at the top). Once logged in, the saved recipes button will show up at the top. Click on that and your saved recipes will show up. Hope this helps!