Brunch & Breakfast Easy Difficulty
4.92 (198 Craver Ratings)

White Castle Breakfast Slider Casserole (Weekend Brunch Bake)

A hearty, crowd-pleasing breakfast casserole featuring morning favorites from the 24/7 breakfast menu, fluffy whisked eggs, crispy hashbrowns, melted cheddar, and savory country sausage gravy.

White Castle Breakfast Slider Casserole (Weekend Brunch Bake)
Tested Copycat Method
Prep Time 15 mins
Cook Time 40 mins
Total Time 55 mins
Yield 8 servings
Servings 8
Calories 380 kcal
Scale Servings:
Jump to Steps

Step-by-Step Instructions

4 Steps
1

Prep Oven & Baking Dish

⏱️ 5 mins

Preheat oven to 350°F (175°C). Grease a 9x13-inch baking dish with non-stick cooking spray or butter.

2

Layer Hashbrowns & Sliders

⏱️ 5 mins

Spread the thawed hashbrowns (or restaurant-style Hash Brown Nibblers) evenly along the bottom of the dish. Cut the 8 White Castle breakfast sliders into quarters and arrange the pieces evenly over the hashbrown layer. Sprinkle 1 cup of shredded Colby Jack cheese over the sliders.

3

Whisk the Egg Custard

⏱️ 5 mins

In a mixing bowl, whisk the 8 eggs, 1 cup milk, garlic powder, smoked paprika, salt, and black pepper until completely smooth. Pour the egg mixture evenly over the slider casserole dish.

4

Bake to Golden Fluffiness

⏱️ 40 mins

Top with the remaining 1 cup of cheese. Bake at 350°F (175°C) for 38 to 42 minutes until the eggs are set in the center and the top cheese is bubbly and golden-brown. Let rest for 5 minutes, slice into squares, and top with warm country sausage gravy if desired!

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Craver Test Kitchen Secrets

  • Overnight Prep & Hours: Assemble the entire dish the evening before, cover with foil, and refrigerate overnight. Because White Castle serves breakfast all day according to the 24/7 restaurant hours, you can pick up fresh sliders anytime.
  • Bacon Lover Swap & Macros: Make half the dish with Sausage Sliders and half with Bacon, Egg & Cheese Sliders. Calculate precise macros using our nutrition calculator.

Recipe FAQs & Home Cooking Tips

Can I freeze leftovers?

Yes! Slice into individual squares, wrap tightly in foil, and freeze for up to 2 months. Reheat in a toaster oven for quick breakfasts alongside fresh roast coffee from the beverages menu.

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