There’s something undeniably special about Sunday mornings. The hustle and bustle of the week fades away, and all that matters is good food and time spent with loved ones. That’s where the Ultimate Sunday Breakfast Casserole comes into play. This delightful dish is a symphony of flavors and textures, combining savory breakfast sausage, creamy eggs, and cheesy goodness all baked into a satisfying casserole. Whether you’re feeding a crowd or just indulging in a cozy family breakfast, this recipe is bound to become a cherished tradition. Let’s dive into why this recipe deserves a spot in your weekly meal rotation.
Why This Recipe Belongs in Your Rotation

The Ultimate Sunday Breakfast Casserole is more than just a meal; it’s an experience. It combines all the best breakfast ingredients into one hearty dish, making it perfect for lazy mornings or special occasions. The beauty of this casserole lies in its versatility. You can customize it with your favorite ingredients or use up leftovers from the week. Plus, it’s a one-dish wonder, which means less cleanup for you—always a win in my book!
What You’ll Need
To make this delicious casserole, gather the following ingredients:
- 1 lb ground breakfast sausage
- 1 cup all-purpose flour
- 4 cups milk
- 6 eggs, beaten and seasoned
- 1 lb frozen diced hash brown potatoes
- 16.3 oz refrigerated tube biscuits, quartered
- 2 cups shredded cheddar cheese
- Salt and pepper to taste
Appliances & Accessories
Before you start cooking, ensure you have the following appliances and tools on hand:
- Large skillet: For browning the sausage.
- Mixing bowl: To combine the eggs and seasonings.
- Baking dish: A 9×13 inch dish works best.
- Whisk: For beating the eggs.
- Spatula: To mix ingredients and serve.
Mastering Ultimate Sunday Breakfast Casserole: How-To

Now, let’s get to the good part—the cooking! Follow these simple steps to create your Ultimate Sunday Breakfast Casserole.
Step 1: Cook the Sausage
In a large skillet over medium heat, add the ground breakfast sausage. Use a spatula to break it apart as it cooks. Sauté until it’s browned and cooked through, about 5-7 minutes. Drain excess grease if necessary.
Step 2: Prepare the Egg Mixture
In a mixing bowl, whisk together the eggs, milk, salt, and pepper until well combined. This creamy mixture will be the base of your casserole.
Step 3: Combine Ingredients
In your greased baking dish, layer the frozen hash brown potatoes evenly across the bottom. Next, sprinkle the cooked sausage over the potatoes. Pour the egg mixture over this layer. Finally, scatter the quartered biscuits on top, followed by the shredded cheddar cheese.
Step 4: Bake
Preheat your oven to 375°F (190°C). Place the casserole in the oven and bake for 45-55 minutes, or until the top is golden brown and a toothpick inserted comes out clean. The aroma will be irresistible!
Step 5: Serve and Enjoy
Once baked, allow the casserole to cool for a few minutes before slicing. Serve warm and watch as your family digs in with smiles on their faces.
Healthier Substitutions

If you’re looking to lighten up your Ultimate Sunday Breakfast Casserole without sacrificing flavor, consider these substitutions:
- Use turkey or chicken sausage instead of pork sausage for a leaner option.
- Opt for whole wheat or gluten-free biscuits to boost fiber.
- Use almond milk or soy milk in place of regular milk for a dairy-free version.
- Incorporate vegetables like spinach or bell peppers for added nutrients.
If You’re Curious
This casserole is not just filling; it’s also flexible! You can easily adapt the recipe to suit your taste. Here are a few ideas:
- Add diced tomatoes for a fresh flavor.
- Include spices like paprika or cayenne for a kick.
- Try different cheeses such as Monterey Jack or pepper jack.
- For a vegetarian version, skip the sausage and load up on veggies.
Meal Prep & Storage Notes
The Ultimate Sunday Breakfast Casserole is perfect for meal prep! You can assemble it the night before and refrigerate, then simply pop it in the oven in the morning. Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. Reheat portions in the microwave or oven until warmed through. It also freezes beautifully—just thaw overnight in the refrigerator before reheating.
Your Top Questions
Can I make this casserole ahead of time?
Absolutely! You can prepare it the night before and bake it in the morning for a hassle-free breakfast.
Can I use fresh potatoes instead of frozen hash browns?
Yes, you can dice fresh potatoes and sauté them until tender before adding them to the casserole. Just adjust the cooking time accordingly.
How can I make this dish vegetarian?
To make a vegetarian version, simply omit the sausage and add your favorite vegetables instead, such as mushrooms, spinach, or zucchini.
What sides pair well with this casserole?
This casserole is hearty enough on its own, but you could serve it with a side of fresh fruit or a simple green salad for a balanced meal.
If you love the Ultimate Sunday Breakfast Casserole, you might also enjoy these delicious weekend breakfast ideas:
The Takeaway
The Ultimate Sunday Breakfast Casserole is a comforting and filling dish that brings people together. It’s easy to make, customizable, and perfect for any occasion. Whether you’re hosting a brunch or enjoying a quiet morning with family, this casserole will surely impress everyone at the table. So, roll up your sleeves and treat your loved ones to this delicious dish that’s bound to become a family favorite for years to come!

Ultimate Sunday Breakfast Casserole
Ingredients
Equipment
Method
- In a large skillet over medium heat, add the ground breakfast sausage. Use a spatula to break it apart as it cooks. Sauté until it’s browned and cooked through, about 5-7 minutes. Drain excess grease if necessary.
- In a mixing bowl, whisk together the eggs, milk, salt, and pepper until well combined. This creamy mixture will be the base of your casserole.
- In your greased baking dish, layer the frozen hash brown potatoes evenly across the bottom. Next, sprinkle the cooked sausage over the potatoes. Pour the egg mixture over this layer. Finally, scatter the quartered biscuits on top, followed by the shredded cheddar cheese.
- Preheat your oven to 375°F (190°C). Place the casserole in the oven and bake for 45-55 minutes, or until the top is golden brown and a toothpick inserted comes out clean. The aroma will be irresistible!
- Once baked, allow the casserole to cool for a few minutes before slicing. Serve warm and watch as your family digs in with smiles on their faces.
Notes
- Assemble the casserole the night before and refrigerate for easy baking in the morning.
- Leftovers can be stored in an airtight container for up to 3 days.
- This dish can also be frozen for later—just thaw overnight before reheating.
