Description
Wake up to a hearty and delicious breakfast with this make-ahead casserole. Layers of savory sausage, colorful vegetables, hash browns, and creamy eggs come together in a dish that’s perfect for holidays, busy mornings, or weekend brunches. Let the fridge do the work overnight so you can enjoy a stress-free start to your day!
Ingredients
- Cooking spray (for greasing)
- ½ (32-ounce) package frozen diced hash brown potatoes
- 1 pound bulk pork sausage
- 1 red bell pepper, chopped
- 1 yellow bell pepper, chopped
- ½ cup onion, chopped
- 2 garlic cloves, minced
- ½ teaspoon dried oregano
- 4 cups fresh spinach
- 4 ounces Monterey Jack cheese, shredded
- 12 large eggs
- ⅔ cup whole milk
- 2 teaspoons Dijon mustard
- ½ teaspoon salt
- ¼ teaspoon ground black pepper
Instructions
- Prepare the Baking Dish
Grease a 9×13-inch baking dish with cooking spray. Spread the frozen hash browns evenly across the bottom of the dish. - Cook the Sausage and Vegetables
Heat a large skillet over medium heat. Cook the sausage until it starts to brown (about 2 minutes). Add the red and yellow bell peppers, onion, garlic, and dried oregano. Cook for an additional 5 minutes, or until the sausage is fully cooked and the vegetables are tender. - Add the Spinach
Stir in the fresh spinach and cook for 1 minute, just until wilted. Remove from heat. - Assemble the Casserole
Spread the sausage and vegetable mixture over the hash browns in the prepared baking dish. Sprinkle the shredded Monterey Jack cheese evenly on top. - Prepare the Egg Mixture
In a large bowl, whisk together the eggs, milk, Dijon mustard, salt, and black pepper until well combined. - Pour and Refrigerate
Pour the egg mixture evenly over the casserole. Cover the dish tightly with plastic wrap or foil and refrigerate for at least 8 hours or overnight. - Bake the Casserole
Preheat your oven to 325°F (165°C). Remove the casserole from the refrigerator and bake it uncovered for 50–60 minutes, or until a knife inserted into the center comes out clean. - Let It Rest and Serve
Allow the casserole to rest for 10 minutes before slicing. Serve hot and enjoy!
Notes
- Customize the Vegetables: Add mushrooms, zucchini, or jalapeños for extra flavor.
- Cheese Options: Try cheddar, Swiss, or a mix of your favorite cheeses.
- Make It Vegetarian: Skip the sausage and add plant-based meat or extra veggies.
- Storage: Refrigerate leftovers in an airtight container for up to 3 days, or freeze for up to 3 months.
- Prep Time: 15 minutes
- Cook Time: 50 minutes
- Category: Breakfast
- Method: Baked
- Cuisine: American