Leftover Prime Rib Breakfast Casserole

Turn your holiday leftovers into the ultimate breakfast dish with this rich, cheesy, and effortlessly delicious Leftover Prime Rib Breakfast Casserole.

Course Breakfast

Keyword Leftover Prime Rib

Prep Time 10

Cook Time 45

Total Time 55

Servings slices

Calories 297kcal

Author Darcey Olson

Cost $8

Ingredients

20 oz shredded hashbrowns, thawed
2 cups cubed leftover prime rib
2 cups shredded cheese *Note 1
½ cup chopped green onion, + more for garnish
8 large eggs
1 cup milk
½ tsp dijon mustard
½ tsp Worcestershire sauce
½ tsp garlic powder
¼ tsp salt
¼ tsp ground black pepper
½ tsp Optional: steak sauce *Note 2

Instructions

Preheat oven to 350°F.
Grease a 9x13 casserole dish and evenly distribute hashbrowns across the bottom of the dish.
Evenly distribute the prime rib, cheese, then chopped onions over the hashbrowns.
In a large mixing bowl, add eggs, milk, garlic powder, mustard, Worcestershire sauce, steak sauce, salt, and pepper, and whisk to combine. Carefully pour the egg mixture over the top of the prime rib/hash browns.
Bake for 45-55 minutes or until cooked throughout. Remove from oven and let rest for 5-10 minutes to set.
Top with green onions, if desired, slice, and serve.

Notes

Note 1 - You can use a total of 2 cups of any meltable cheese, such as cheddar, Monterey Jack, Pepper jack, mozzarella, or havarti.

Note 2 - This isn't a "must have" ingredient, it's still delicious without it.

Nutrition