Servings: 6 | Total Time: 45 mins | Difficulty: Easy | Calories: 202 kcal per serving
This easy Breakfast Casserole is the kind of morning meal that makes weekends better.
Packed with savory sausage, melted cheddar, and tender spinach baked into fluffy eggs, it’s hearty yet surprisingly light. Perfect for meal prep or brunch gatherings, this one-pan dish brings comfort, protein, and flavor together in every bite.
Whether you serve it fresh out of the oven or reheat it during the week, it’s the kind of breakfast that feels indulgent without being complicated.
Look at the Recipe
- Fluffy, cheesy, and full of savory flavor
- Packed with protein to keep you full for hours
- Ideal for brunches, family breakfasts, or weekly meal prep
Ingredients Needed
Base
- 8 large eggs
- ¼ cup heavy cream
- ½ tsp Diamond Crystal kosher salt
- ¼ tsp black pepper
- ½ tsp garlic powder
- ¼ tsp red pepper flakes
Filling & Toppings
- 1 lb pork breakfast sausage
- 2 cups baby spinach leaves (about 2 oz)
- 1 cup shredded cheddar cheese (4 oz), divided
How to Make Our Breakfast Casserole
-
Preheat & Prep:
Set oven to 400°F (200°C). Lightly grease a 9-inch square baking dish. -
Whisk the Eggs:
In a large bowl, whisk together eggs, heavy cream, salt, pepper, garlic powder, and red pepper flakes. Stir in half of the shredded cheddar and set aside. -
Cook the Sausage:
Heat a 12-inch nonstick skillet over medium-high heat (no oil needed). Add the sausage and cook for 5–7 minutes, breaking it apart until browned. -
Add Spinach:
Turn off the heat, then stir in spinach. Let the residual heat wilt the leaves slightly. -
Assemble:
Spread the sausage-spinach mixture evenly across the baking dish. Pour the egg mixture on top, stirring gently to distribute everything evenly. Sprinkle with the remaining cheese. -
Bake:
Bake for about 25 minutes, or until the eggs are set and the cheese is melted and golden. The aroma alone will tell you it’s ready. -
Rest & Serve:
Let it rest for 10 minutes before slicing into 9 squares. Serve warm.
Storage & Serving Suggestions
- Refrigerate: Store leftovers in an airtight container for up to 4 days.
- Reheat: Microwave individual portions for 30–45 seconds or warm in the oven at 300°F until heated through.
- Freeze: Freeze slices for up to 2 months; thaw overnight in the fridge before reheating.
- Serving Ideas: Pair with avocado slices, salsa, or roasted potatoes for a full breakfast.
Tips & FAQs
Can I use turkey sausage instead of pork?
Yes! Turkey or chicken sausage work great for a leaner option.
Can I add more veggies?
Absolutely — mushrooms, bell peppers, or onions are all great add-ins.
Is this casserole keto-friendly?
Yes, it’s naturally low in carbs and high in protein and fat — perfect for keto or low-carb diets.
Can I make it ahead?
You can assemble everything the night before, refrigerate it, and bake fresh in the morning.
What cheese works best?
Sharp cheddar melts beautifully, but Swiss or Monterey Jack also taste great.
