White Castle Casserole

Turn your favorite fast-food sliders into a deliciously comforting dish with this White Castle Casserole recipe! Perfect for feeding a crowd, this creative spin on classic cheeseburgers layers seasoned ground beef, sautéed onions, melted American cheese, and tangy dill pickles between soft, buttery slider rolls. Topped with a rich egg-and-milk mixture and finished with sesame seeds for that iconic burger touch, this casserole bakes to golden perfection in just 35 minutes. Ideal for potlucks, weeknight dinners, or game-day spreads, this crave-worthy dish brings bold, nostalgic burger flavors to your dining table with minimal effort. Simply slice and serve for a hassle-free meal everyone will love!

Nutriscore Rating: 56/100

Prep Time:15 mins

Cook Time:35 mins

Total Time:50 mins

Servings: 6

Ingredients

• 1 pound ground beef
• 1 medium, finely chopped yellow onion
• 0.5 teaspoon salt
• 0.5 teaspoon black pepper
• 1 teaspoon garlic powder
• 8 pieces slider-sized sandwich rolls
• 8 slices sliced American cheese
• 16 slices dill pickle slices
• 2 eggs
• 0.5 cup milk
• 0.5 cup mayonnaise
• 2 tablespoons ketchup
• 1 tablespoon yellow mustard
• 2 tablespoons sesame seeds
• 1 tablespoon butter

Directions

Step 1

Preheat your oven to 350°F (175°C) and lightly grease a 9x13-inch casserole dish.

Step 2

In a large skillet, melt the butter over medium heat. Add the chopped onion and cook until softened, about 5 minutes.

Step 3

Add the ground beef to the skillet with the onions. Season with salt, black pepper, and garlic powder. Cook until the beef is fully browned, breaking it up into small crumbles as it cooks. Drain any excess fat and set aside.

Step 4

In a medium bowl, whisk together the eggs, milk, mayonnaise, ketchup, and mustard. Set aside.

Step 5

Cut the sandwich rolls in half horizontally to create top and bottom layers. Place the bottom halves of the rolls evenly across the casserole dish to form a base layer.

Step 6

Spread the cooked ground beef and onion mixture evenly over the bottom layer of rolls.

Step 7

Place the sliced American cheese over the beef mixture, covering it completely.

Step 8

Arrange the dill pickle slices evenly on top of the cheese layer.

Step 9

Place the top halves of the sandwich rolls over the pickles to complete the slider layers.

Step 10

Pour the prepared egg and milk mixture evenly over the top of the casserole, ensuring the liquid soaks into the rolls.

Step 11

Sprinkle the sesame seeds evenly over the top layer of rolls.

Step 12

Bake in the preheated oven for 25-30 minutes, or until the casserole is heated through, and the tops of the rolls are golden brown.

Step 13

Remove the casserole from the oven and let it rest for 5 minutes before serving.

Step 14

Slice into portions and enjoy this burger-inspired comfort food!

Nutrition Facts

Serving size	(1668.0g)

Amount per serving	% Daily Value*
Calories	4180.5

Total Fat 287.7g	0%
Saturated Fat 99.1g	0%
Polyunsaturated Fat 4.6g
Cholesterol 1050.6mg	0%
Sodium 8881.1mg	0%
Total Carbohydrate 250.0g	0%
Dietary Fiber 13.9g	0%
Total Sugars 55.2g
Protein 172.3g	0%

Vitamin D 265.9IU	0%
Calcium 2071.4mg	0%
Iron 23.4mg	0%
Potassium 2713.3mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 60.5%

Protein: 16.1%

Carbs: 23.4%