Overnight Casserole

Wake up to effortless flavor with this hearty and customizable Overnight Casserole! Packed with crumbled breakfast sausage, sautéed onions and bell peppers, and layers of cubed day-old bread soaked in a rich egg and milk mixture, this make-ahead breakfast dish is perfect for busy mornings or holiday gatherings. Topped with melted cheddar cheese and baked to golden perfection, this casserole is irresistibly savory with every bite. Prepped in just 15 minutes the night before, it’s the ultimate stress-free solution for feeding a crowd. Simply let it chill overnight, bake in the morning, and enjoy a warm and comforting breakfast that’s full of flavor. Ideal for meal preppers and family brunches, this recipe is sure to become a household favorite. Keywords: overnight breakfast casserole, make-ahead recipes, easy brunch ideas, sausage egg casserole.

Nutriscore Rating: 59/100

Prep Time:15 mins

Cook Time:55 mins

Total Time:70 mins

Servings: 8

Ingredients

• 1 pound Breakfast sausage
• 8 pieces Large eggs
• 2 cups Whole milk
• 2 cups Grated cheddar cheese
• 6 cups Day-old bread (cubed)
• 1 teaspoon Salt
• 0.5 teaspoon Black pepper
• 1 medium Onion (diced)
• 1 medium Bell pepper (diced)
• 1 tablespoon Butter (for greasing the pan)

Directions

Step 1

Heat a large skillet over medium heat and cook the breakfast sausage, breaking it up into crumbles, until browned and fully cooked. Remove from the heat and set aside.

Step 2

In the same skillet, sauté the diced onion and bell pepper until softened, about 4–5 minutes. Set aside with the sausage.

Step 3

Grease a 9x13-inch baking dish with the butter to prevent sticking.

Step 4

Evenly spread the cubed bread in the prepared baking dish.

Step 5

Sprinkle the cooked sausage and sautéed vegetables over the bread cubes, spreading them evenly.

Step 6

In a large mixing bowl, whisk together the eggs, whole milk, salt, and black pepper until well combined.

Step 7

Pour the egg mixture evenly over the bread, sausage, and vegetables in the baking dish. Use a spatula to gently press the ingredients down to ensure they're soaked in the egg mixture.

Step 8

Sprinkle the grated cheddar cheese evenly over the top of the casserole.

Step 9

Cover the dish tightly with aluminum foil and refrigerate overnight (or at least 6–8 hours).

Step 10

When ready to bake, preheat your oven to 350°F (175°C).

Step 11

Remove the casserole from the refrigerator and let it sit at room temperature for 20–30 minutes while the oven preheats.

Step 12

Bake the casserole (still covered with foil) in the preheated oven for 30 minutes.

Step 13

Remove the foil and continue baking for an additional 20–25 minutes, or until the top is golden brown and the eggs are set.

Step 14

Remove the casserole from the oven and allow it to cool for 5–10 minutes before slicing into squares and serving.

Nutrition Facts

Serving size	2412.7 grams (2412.7g)

Amount per serving	% Daily Value*
Calories	5210

Total Fat 287.30g	368%
Saturated Fat 121.60g	608%
Polyunsaturated Fat 0.50g
Cholesterol 2065mg	688%
Sodium 12130mg	527%
Total Carbohydrate 414.50g	151%
Dietary Fiber 26.80g	96%
Total Sugars 52.50g
Protein 241.00g	482%

Vitamin D 583IU	2914%
Calcium 2997mg	231%
Iron 26mg	147%
Potassium 3308mg	70%

*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: 49.7%

Protein: 18.5%

Carbs: 31.8%