If you’re looking for a comforting, hearty breakfast that feels like a warm hug in a dish, you’re going to love this Fireman’s Overnight Breakfast Casserole Recipe. Perfect for busy mornings or special weekend gatherings, it combines savory sausage, creamy eggs, melty sharp cheddar, and fresh veggies in a way that’s both simple and spectacular. The overnight prep makes mornings a breeze while delivering rich flavors that everyone will rave about.
Ingredients You’ll Need
These ingredients are straightforward, accessible, and each plays a crucial role in creating the perfect balance of flavor, texture, and color in this casserole. From the spicy sausage to the earthy mushrooms, every bite offers a delightful combination.
- 1 pound ground pork sausage: Choose a flavorful sausage like Jimmy Dean for that classic savory punch.
- 8 ounces fresh sliced mushrooms: Adds earthiness and a lovely tender texture.
- 1 large onion, chopped: Brings sweetness and depth as it cooks down.
- 1 green pepper, chopped: Adds a touch of brightness and a mild crunch.
- Salt and pepper: Essential for seasoning to enhance every flavor component.
- 12 eggs: The rich base that holds this casserole together.
- 1 cup whipping cream: Makes the egg mixture luxuriously creamy.
- 1 pound shredded extra sharp cheddar cheese: Gives that perfect melty, tangy finish.
- 1 can (10.5 oz) condensed cream of mushroom soup: Adds moisture and mushroom flavor throughout.
- ½ cup milk: Helps create a lighter consistency for the custard.
- ¼ teaspoon garlic powder: Adds a subtle savory note that ties everything together.
How to Make Fireman’s Overnight Breakfast Casserole Recipe
Step 1: Prepare the Sausage and Vegetables
Begin by browning the ground pork sausage in a skillet over medium heat until fully cooked and nicely browned. Drain any excess fat, then add the chopped onion, green pepper, and sliced mushrooms. Sauté everything together until the vegetables are tender and fragrant. Season lightly with salt and pepper to enhance the natural flavors. This step builds the hearty base layer of your casserole.
Step 2: Mix the Egg Custard
In a large bowl, whisk together the eggs, whipping cream, milk, cream of mushroom soup, salt, pepper, and garlic powder until smooth and well combined. This creamy custard mixture will soak into the sausage and vegetables, making the casserole rich and tender after baking.
Step 3: Assemble the Casserole
Grease a large baking dish and spread the sausage and veggies evenly across the bottom. Then pour the egg custard mixture over the top, allowing it to seep through the layers. Sprinkle the shredded extra sharp cheddar cheese generously over everything. Cover the dish tightly with foil and refrigerate overnight. This slow soak gives the casserole its signature texture and melded flavors that are simply irresistible.
Step 4: Bake to Perfection
The following morning, preheat your oven to 350°F (175°C). Remove the foil and bake the casserole, uncovered, for about 60 minutes or until the center is set and the top is golden-brown and bubbly. Let it cool for a few minutes before slicing to help the layers settle nicely.
How to Serve Fireman’s Overnight Breakfast Casserole Recipe
Garnishes
For a fresh and vibrant touch, sprinkle chopped green onions or fresh parsley over the warm casserole. A dollop of sour cream or a side of salsa can also add delightful brightness and extra creaminess that pairs wonderfully with all the rich flavors.
Side Dishes
This casserole shines as the star of your breakfast table but pairing it with crispy bacon, fresh fruit salad, or warm buttermilk biscuits creates a well-rounded, indulgent meal everyone will enjoy. The combination of savory and sweet sides balances the richness of the casserole beautifully.
Creative Ways to Present
Try serving individual portions in small ramekins or muffin tins for easy grab-and-go bites at a brunch party. You can also add a bit of hot sauce drizzle or switch up the cheese and vegetable mix for a personalized twist on this beloved Fireman’s Overnight Breakfast Casserole Recipe.
Make Ahead and Storage
Storing Leftovers
Cover any leftover casserole tightly with plastic wrap or foil and store it in the refrigerator. It will stay fresh for up to 3 days, making it an excellent option for quick breakfasts or easy snacks during the week.
Freezing
This recipe freezes beautifully. Freeze the fully assembled casserole before baking or freeze cooked leftovers in airtight containers. When frozen uncooked, just thaw in the fridge overnight before baking. This makes it a lifesaver on busy mornings when time is tight.
Reheating
Reheat slices gently in the microwave for 1-2 minutes or warm in a 350°F oven covered with foil until heated through. Avoid overheating to keep the casserole moist and tender rather than dry.
FAQs
Can I make this casserole vegetarian?
Absolutely! Swap the sausage with sautéed mushrooms, plant-based sausage, or extra veggies to keep it hearty and delicious while making it meat-free.
What cheese works best for this casserole?
While extra sharp cheddar brings bold flavor, you can experiment with Monterey Jack, mozzarella, or a blend depending on your taste preferences.
How long can I refrigerate the casserole before baking?
The casserole is best baked within 24 hours of assembling for optimal freshness and texture, but up to 48 hours should be fine if your fridge is cold enough.
Can this dish be made gluten-free?
Yes! Just ensure that your cream of mushroom soup and sausage are labeled gluten-free. Many brands offer gluten-free options for both.
Is it possible to double the recipe?
Definitely. Use a larger baking dish and increase the ingredients proportionally, but keep an eye on cooking time, as it may take a bit longer to bake all the way through.
Final Thoughts
Friends, the Fireman’s Overnight Breakfast Casserole Recipe is one of those special dishes that effortlessly brings comfort and joy to your breakfast or brunch table. Its simple prep, bold flavors, and make-ahead ease make it a go-to for busy mornings or gatherings. I can’t wait for you to try it and experience just how satisfying and delicious this casserole truly is!
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Fireman’s Overnight Breakfast Casserole Recipe
- Prep Time: 480 minutes
- Cook Time: 60 minutes
- Total Time: 540 minutes
- Yield: 12 servings
- Category: Breakfast Casserole
- Method: Baking
- Cuisine: American
Description
This Fireman’s Overnight Breakfast Casserole is a hearty and satisfying dish perfect for feeding a crowd. Packed with savory ground pork sausage, fresh mushrooms, onion, green pepper, eggs, and sharp cheddar cheese, it’s a comforting casserole that cooks overnight in the fridge and bakes to golden perfection in the morning. Great for busy mornings or special brunches, this casserole combines creamy mushroom soup and whipping cream for extra richness and flavor.
Ingredients
Meat and Vegetables
- 1 pound ground pork sausage (e.g., Jimmy Dean)
- 8 ounces fresh sliced mushrooms
- 1 large onion, chopped
- 1 green pepper, chopped
- Salt and pepper, to taste
Egg Mixture
- 12 eggs
- 1 cup whipping cream
- 1 pound shredded extra sharp cheddar cheese
- 1 (10.5-ounce) can condensed cream of mushroom soup
- ½ cup milk
- ¼ teaspoon garlic powder
Instructions
- Prepare the sausage and vegetables: In a large skillet over medium heat, cook the ground pork sausage until browned and cooked through. Drain any excess fat, then add the sliced mushrooms, chopped onion, and green pepper. Sauté the vegetables with the sausage until softened, about 5-7 minutes. Season with salt and pepper to taste. Remove from heat and set aside to cool slightly.
- Mix the egg custard: In a large bowl, whisk together the 12 eggs, whipping cream, milk, condensed cream of mushroom soup, and garlic powder until fully combined and smooth.
- Assemble the casserole: Preheat your oven to 350°F (175°C). In a greased 9×13-inch baking dish, evenly spread the cooked sausage and vegetable mixture. Pour the egg and cream mixture over the top. Then sprinkle the shredded extra sharp cheddar cheese evenly across the dish.
- Overnight refrigeration: Cover the baking dish tightly with aluminum foil or plastic wrap and refrigerate overnight, or for at least 8 hours. This allows the flavors to meld and the casserole to set.
- Bake the casserole: The next morning, remove the casserole from the refrigerator and bake uncovered in the preheated oven for 55 to 60 minutes, or until the eggs are fully set and the cheese is bubbly and golden brown on top. To check doneness, insert a knife in the center and make sure it comes out clean.
- Serve and enjoy: Allow the casserole to cool for 5-10 minutes before slicing. Serve warm as a filling breakfast or brunch option that can easily feed 12 people.
Notes
- This casserole can be prepared the night before, making it ideal for busy mornings or special occasions.
- Feel free to swap ground pork sausage with turkey sausage or a vegetarian sausage alternative if preferred.
- If you want to add more vegetables, chopped spinach or diced tomatoes work well in this recipe.
- Leftovers can be refrigerated for up to 3 days and reheated.
- For a lower fat option, use low-fat milk and reduced-fat cheese, and consider turkey sausage.
