Cheesy Breakfast Casserole with Spinach and Sausage

This hearty and protein-packed breakfast casserole is perfect for weekends, holidays, or meal prep. Made with tender spinach, flavorful turkey sausage, sun-dried tomatoes, and two types of cheese, it bakes into a golden, fluffy dish that’s easy to slice and serve. You can prepare it ahead of time and simply bake in the morning for a stress-free breakfast.

Why You’ll Love This Recipe

• Easy to make ahead and bake when needed
• High in protein and very satisfying
• Adaptable with different vegetables, cheeses, or seasonings
• Great for feeding a crowd or preparing breakfast for the week

Ingredients

• 12 oz turkey breakfast sausage
• 5 oz fresh baby spinach
• 12 large eggs
• 1 ½ cups whole or reduced-fat milk
• 2 cups shredded mozzarella cheese
• ¼ cup grated Parmesan cheese
• 1 teaspoon salt
• Black pepper to taste
• ¼ cup sun-dried tomatoes, drained and finely chopped

Instructions

1. Prepare the Sausage
   Cook the turkey sausage in a skillet over medium-high heat until browned. Transfer to a bowl and set aside.
2. Cook the Spinach
   Add the spinach to the same skillet and sauté until wilted. Remove, squeeze out any excess moisture, and finely chop.
3. Mix the Eggs
   In a mixing bowl, whisk together the eggs, milk, 1 cup mozzarella, 2 tablespoons Parmesan, salt, and black pepper.
4. Assemble the Casserole
   Lightly grease a 9 x 13 baking dish. Evenly spread the sausage, chopped spinach, and sun-dried tomatoes across the bottom. Pour the egg mixture over the top. Sprinkle with the remaining mozzarella and Parmesan.
5. Bake
   Bake at 350°F (175°C) for about 35 minutes, or until the casserole is set and lightly browned on top.
6. Serve
   Allow to cool slightly before slicing.

Storage and Freezing

• Refrigerator: Store leftovers in an airtight container for up to 4 days. Reheat until warmed through.
• Freezer: Freeze individual portions for up to 3 months. Thaw overnight or reheat directly from frozen in the oven or microwave.

Variations and Substitutions

• Use chicken sausage or a plant-based sausage alternative.
• Swap spinach for kale or Swiss chard.
• Add vegetables such as bell peppers, mushrooms, or onions.
• Replace mozzarella with Swiss, cheddar, gouda, or feta.
• Season the egg mixture with dried oregano, thyme, paprika, garlic powder, or onion powder.

Serving Ideas

Serve with fresh fruit, toast, roasted potatoes, or a simple green salad for a complete meal.