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–+ servings
Merry

Overnight Sausage Hashbrown Breakfast Casserole

Start your day with a warm, hearty Sausage Hashbrown Breakfast Casserole! Packed with savory sausage, crispy hashbrowns, fresh vegetables, and fluffy eggs, this dish is easy to make, customizable, and perfect for family breakfasts or weekend brunches.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 8 servings
Course: Breakfast
Cuisine: American
Ingredients Method Notes

Ingredients
  

  • 1 pound pork breakfast sausage
  • ¾ cup red bell pepper diced
  • ¾ cup onion diced
  • 10 ounces 2 cups frozen hashbrowns
  • 1 –2 cups spinach finely chopped
  • 10 large eggs
  • 1 teaspoon kosher salt
  • ½ teaspoon black pepper
  • ½ cup whole milk or unsweetened coconut milk
  • 1 cup shredded sharp cheddar cheese or dairy-free cheese plus extra for topping

Method
 

  1. Preheat the Oven: Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish and set aside.
Cook the Sausage and Vegetables:
  1. Heat a skillet over medium-high heat. Add the sausage, breaking it into small pieces as it cooks.
  2. Add the diced red bell pepper and onion to the skillet. Cook until the sausage is browned and the vegetables are softened, about 6–8 minutes.
  3. Stir in the spinach and cook for 1–2 minutes until wilted. Remove the skillet from heat and let the mixture cool slightly.
Prepare the Egg Mixture:
  1. In a large mixing bowl, whisk together the eggs, milk, salt, and pepper until fully combined.
  2. Stir in the hashbrowns, shredded cheese, and the sausage mixture. Mix well to ensure all ingredients are evenly distributed.
Assemble the Casserole:
  1. Pour the mixture into the prepared baking dish, spreading it evenly.
  2. Sprinkle additional shredded cheese on top for an extra cheesy finish.
Bake the Casserole:
  1. Bake uncovered for 25–30 minutes, or until the eggs are set and the top is golden brown.
  2. Remove the casserole from the oven and let it cool for a few minutes before serving.

Notes

  • Make Ahead: Assemble the casserole the night before, cover, and refrigerate. Bake fresh the next morning for an easy breakfast.
  • Customizable Add-Ins: Add mushrooms, jalapeños, or zucchini for more flavor and texture.
  • Cheese Options: Use pepper jack or mozzarella for a different cheesy flavor.
  • Storage Tips: Refrigerate leftovers in an airtight container for up to 4 days. Reheat in the oven or microwave.
  • Freezer-Friendly: Cool the baked casserole completely, then wrap tightly and freeze for up to 3 months.

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