Overnight Breakfast Casserole Recipe

Previous Next

Cook Time: 50 minutes

Ingredients

This recipe is designed to serve 12 and can be scaled as needed. Note that cooking times remain the same even if ingredient amounts change.

• Cooking spray
• 1/2 (32-ounce) package frozen diced hash brown potatoes
• 1 pound bulk pork sausage
• 1 red bell pepper, chopped
• 1 yellow bell pepper, chopped
• 1/2 cup chopped onion
• 2 cloves garlic, minced
• 1/2 teaspoon dried oregano
• 4 cups fresh spinach
• 4 ounces Monterey Jack cheese, shredded
• 12 large eggs
• 2/3 cup whole milk
• 2 teaspoons Dijon mustard
• 1/2 teaspoon salt
• 1/4 teaspoon freshly ground black pepper

Directions

1. Prepare all ingredients and preheat your workspace for cooking.
2. Grease a 9x13-inch baking dish with cooking spray and evenly spread the hash browns on the bottom.
3. In a large skillet over medium heat, cook the sausage until it just starts to brown, about 2 minutes.
4. Add the chopped bell peppers, onion, garlic, and oregano to the skillet. Cook until the vegetables are tender and the sausage is no longer pink, about 5 minutes.
5. Stir in the fresh spinach and cook until just wilted, approximately 1 minute.
6. Transfer the vegetable and sausage mixture over the hash browns in the prepared baking dish. Sprinkle the shredded cheese evenly on top.
7. In a bowl, whisk together the eggs, milk, Dijon mustard, salt, and black pepper until smooth. Pour this mixture evenly over the casserole.
8. Cover the dish and refrigerate for 8 hours or overnight to allow flavors to meld.
9. When ready to bake, preheat the oven to 325F (165C). Uncover the casserole and bake until a knife inserted in the center comes out clean, 50-60 minutes.
10. Allow the casserole to rest for 10 minutes before slicing and serving.

Nutrition Facts (per serving)

• Calories: 357
• Fat: 25g (32% DV)
• Saturated Fat: 8g (40% DV)
• Cholesterol: 228mg (76% DV)
• Sodium: 775mg (34% DV)
• Carbohydrates: 16g (6% DV)
• Dietary Fiber: 2g (6% DV)
• Sugars: 2g
• Protein: 18g (36% DV)
• Vitamin C: 50mg (56% DV)
• Calcium: 143mg (11% DV)
• Iron: 2mg (12% DV)
• Potassium: 488mg (10% DV)

*Percent Daily Values are based on a 2,000-calorie diet. Nutrient data may vary depending on ingredients and preparation.

The History of the Overnight Breakfast Casserole

The concept of the overnight breakfast casserole traces its roots to traditional American brunch culture, which began gaining popularity in the early 20th century. Originally, families sought convenient ways to serve a hearty breakfast for large gatherings without spending hours in the kitchen in the morning. By preparing ingredients the night before and allowing the flavors to meld overnight, this dish offered both efficiency and comfort. The combination of eggs, cheese, sausage, and vegetables mirrors classic American breakfast flavors, making it a versatile crowd-pleaser that has endured for decades.

Regional Variations and Local Twists

Across the United States, regional adaptations of this casserole reflect local tastes and available ingredients. In the Midwest, cheese and hearty potatoes dominate, often with smoked sausage or ham. Southern versions may incorporate spicy breakfast sausage, bell peppers, and even hot sauce for a kick. In coastal regions, seafood such as crab or smoked salmon can replace or complement the traditional meat. The choice of cheese also varies, with Monterey Jack, cheddar, or Colby being popular, depending on local preference. These subtle variations give each version its unique regional identity.

How It Differs from Similar Dishes

While it shares similarities with strata or frittatas, the overnight breakfast casserole is distinguished by its layered structure and pre-baking soaking period. Unlike a frittata, which is cooked entirely on the stovetop or baked immediately, this casserole allows eggs and milk to soak into the starches of hash browns or bread overnight, resulting in a custard-like texture. Compared to a strata, which often uses cubed bread as a base, this dish frequently uses hash browns or shredded potatoes, giving it a denser and more substantial feel.

Where It Is Commonly Served

This casserole is a staple for holiday mornings, weekend brunches, and special occasions where convenience and flavor are equally valued. Restaurants and bed-and-breakfasts often feature it on brunch menus, offering a filling option that satisfies both sweet and savory cravings. It is also popular for potlucks, community gatherings, and family celebrations because it can easily serve a crowd and be prepared ahead of time, freeing hosts from morning kitchen duties.

Interesting Facts About the Dish

• The practice of preparing casseroles overnight helps develop deeper flavors as the ingredients meld together, especially when using fresh herbs and sauted vegetables.
• Despite its simplicity, the dish provides a balanced combination of protein, carbohydrates, and fats, making it surprisingly nutritious for a brunch option.
• Many variations exist that cater to dietary restrictions, including gluten-free, vegetarian, and dairy-free adaptations, proving its versatility.
• The casserole can be assembled in advance, frozen, and baked later, making it a favorite for busy households and meal-prep enthusiasts.
• Its colorful presentation, with layers of peppers, greens, and cheese, often makes it a visually appealing centerpiece on the breakfast table.

FAQ about Overnight Breakfast Casserole Recipe

Comments