If you are looking for a comforting, crowd-pleasing dish that brings everyone together, look no further than this classic Breakfast Casserole. It’s the perfect combination of flaky biscuit pieces, savory sausage, fluffy eggs, and melty cheddar cheese all baked to golden perfection and smothered in creamy country gravy. This Breakfast Casserole is not only hearty and full of flavor but also incredibly simple to prepare, making it a go-to recipe whether you’re hosting a brunch or just craving a special weekend breakfast. Trust me, once you try this delicious combination, it will quickly become a staple in your recipe collection.

Breakfast Casserole Recipe - Recipe Image

Ingredients You’ll Need

Gathering simple, familiar ingredients is what makes this Breakfast Casserole so special — each one plays a crucial role in textures and flavors that meld beautifully together. From buttery biscuits that give a tender bite to savory sausage and gooey cheese, every element is essential.

Butter (2 tbsp): Used to sauté onions and sausage, enriching the base flavor with a silky texture.
Onion (½, diced): Adds a subtle sweetness and lively crunch that complements the other robust flavors.
Refrigerated biscuit dough (10 oz, cut into pieces): This shortcut biscuit dough creates a fluffy, golden bed for the filling without fussing over homemade dough.
Breakfast sausage (1 lb): The salty, well-seasoned sausage is crucial for that classic savory punch.
Eggs (5): They bind everything together, creating a rich and tender custard-like texture.
Whole milk (½ cup): Adds creaminess to the egg mixture, keeping the casserole moist and soft.
Oregano (1 tsp): A hint of herbaceous earthiness that brightens the overall taste.
Shredded cheddar cheese (1½ cups): Melts beautifully to provide gooey, sharp richness with each bite.
Prepared country gravy (1½ cups): The hearty sauce that brings a luscious, comforting finish to the dish.

How to Make Breakfast Casserole

Step 1: Preheat and Prepare

Start by preheating your oven to 350°F and greasing a 9×13-inch baking dish. This ensures your casserole will bake evenly and release easily when done.

Step 2: Cook Sausage and Onions

In a skillet, melt the butter over medium heat, then add diced onions and breakfast sausage. Cook until the sausage is browned and onions are tender, about 7-10 minutes. Be sure to drain any excess grease to keep the casserole from becoming too greasy.

Step 3: Layer the Biscuit Pieces

Place the biscuit dough pieces evenly in the bottom of your prepared baking dish. These fluffy biscuit chunks act like little pillows absorbing the savory flavors that come next.

Step 4: Add Sausage Mixture

Spread the cooked sausage and onions over the biscuit layer, distributing it evenly for balanced bites in every slice.

Step 5: Whisk Eggs, Milk, and Oregano

In a separate bowl, whisk together the eggs, whole milk, and oregano until smooth and fully combined. This mixture will soak into the biscuit and sausage, helping set the casserole into a custardy delight.

Step 6: Pour Egg Mixture Over

Slowly pour the egg and milk mixture over the layered sausage and biscuit base. The liquid should seep into every nook and cranny to bind the casserole beautifully as it bakes.

Step 7: Sprinkle Cheese and Bake

Top the casserole with shredded cheddar cheese, then place it in the oven. Bake for 30 to 40 minutes, until the casserole is golden brown on top and set in the middle. It should feel firm and a toothpick inserted comes out clean.

How to Serve Breakfast Casserole

Garnishes

Adding fresh garnishes can brighten and elevate the hearty Breakfast Casserole. Consider sprinkling chopped fresh parsley or chives for a pop of color and fresh herbal notes. A dollop of sour cream or a drizzle of hot sauce can also add an exciting finishing touch tailored to your taste.

Side Dishes

This breakfast gem pairs wonderfully with crisp fruit salad to provide a refreshing contrast, or some roasted potatoes for extra comforting carbs. A light green salad with a citrus vinaigrette can add brightness and balance, especially when serving the casserole at brunch.

Creative Ways to Present

If you want to impress guests, serve the Breakfast Casserole in individual ramekins or mini cast iron skillets. You can also layer the casserole in a clear glass dish to showcase its beautiful layers for a visual wow factor. For a fun twist, sprinkle some extra cheese and broil for a couple of minutes just before serving to create a crispy cheesy crust on top.

Make Ahead and Storage

Storing Leftovers

Once cooled, cover any leftover Breakfast Casserole tightly with plastic wrap or transfer to an airtight container and store in the refrigerator for up to 3 days. It remains just as tasty and is perfect for quick breakfasts or snacks.

Freezing

This casserole freezes beautifully! To save for later, cool completely, then wrap tightly in foil and place in a freezer-safe bag. It can be frozen for up to 2 months. When ready to enjoy, thaw overnight in the fridge before reheating.

Reheating

Reheat leftover Breakfast Casserole in a 350°F oven for about 15-20 minutes or until warmed through. You can also microwave individual portions on medium power, covering loosely to keep moisture locked in. It reheats well without losing its delicious texture and flavor.

FAQs

Can I use regular bread instead of biscuit dough?

Absolutely! While biscuit dough offers a fluffy, rich texture that’s ideal for this casserole, cubed bread (preferably slightly stale or toasted) can be substituted if needed. It will create a different texture but remain delicious.

Is it possible to make this vegetarian?

Yes! Simply swap out the breakfast sausage for sautéed mushrooms, bell peppers, or your favorite plant-based sausage alternative to keep the hearty, savory balance without meat.

Can I prepare the Breakfast Casserole the night before?

Definitely. Assemble the casserole up to step 6, cover it tightly, and refrigerate overnight. When ready, add the cheese topping and bake fresh in the morning for a no-fuss start to your day.

What type of cheese works best?

Cheddar cheese is classic for its sharp, melty qualities, but feel free to experiment with Monterey Jack, pepper jack, or even a blend of cheeses for a twist on flavor.

How spicy is this Breakfast Casserole?

This casserole is mild and savory by default, but you can easily add spice with cayenne or hot sauce either in the egg mixture or as a topping to suit your heat preference.

Final Thoughts

This Breakfast Casserole is pure morning magic: warm, filling, and bursting with layers of flavor that feel like a comforting hug on a plate. It’s a recipe you’ll return to time and again — whether for lazy weekend brunches, holiday mornings, or simply because you deserve something delicious. Give it a try and watch it become your kitchen’s new favorite!

Breakfast Casserole Recipe

★★★★★

4.8 from 20 reviews

Author: Olivia
Total Time: 50 minutes
Yield: 6 to 8 servings 1x
Diet: Halal

Print Recipe

Description

This hearty Breakfast Casserole is a savory and satisfying morning meal featuring layers of buttery biscuit dough, savory sausage and onions, topped with eggs, cheddar cheese, and creamy country gravy. Perfect for busy mornings or brunch gatherings, this dish combines rich flavors and comforting textures that everyone will love.

Ingredients

Scale

Base

2 tbsp butter
½ onion, diced
10 oz refrigerated biscuit dough, cut into pieces

Meat

1 lb breakfast sausage

Egg Mixture

5 eggs
½ cup whole milk
1 tsp oregano

Toppings

1½ cups shredded cheddar cheese
1½ cups prepared country gravy

Instructions

Preheat oven: Set your oven to 350°F (175°C) and lightly grease a 9×13-inch baking dish to prevent sticking.
Cook sausage and onions: In a skillet, melt the butter over medium heat, then add diced onion and breakfast sausage. Cook, stirring frequently, until the sausage is browned and onions are softened. Drain any excess grease from the pan.
Layer biscuit pieces: Arrange the cut biscuit dough pieces evenly in the bottom of the prepared baking dish to create the base layer.
Add sausage mixture: Spread the cooked sausage and onion mixture evenly over the biscuit layer in the baking dish.
Whisk eggs, milk, and oregano: In a mixing bowl, combine eggs, whole milk, and oregano. Whisk thoroughly until smooth and well blended.
Pour egg mixture: Carefully pour the egg mixture over the sausage and biscuit layers in the baking dish, ensuring it is distributed evenly.
Add cheese and gravy: Sprinkle the shredded cheddar cheese evenly over the top, then pour the prepared country gravy evenly across the casserole.
Bake: Place the casserole in the preheated oven and bake for 30 to 40 minutes. Bake until the casserole is golden brown on top and the egg mixture is fully set.
Serve: Remove from oven and let cool slightly before serving warm. Enjoy your delicious breakfast casserole!

Notes

Use refrigerated biscuit dough for convenience and a tender base.
Drain excess grease from sausage for a less greasy casserole.
Prepared country gravy can be store-bought or homemade according to preference.
This casserole can be assembled a day ahead and refrigerated; bake when ready.
For a spicier twist, add red pepper flakes or chopped jalapeños.
Substitute cheddar cheese with your favorite cheese like Monterey Jack or mozzarella if desired.

Prep Time: 15 minutes
Cook Time: 35 minutes
Category: Breakfast
Method: Baking
Cuisine: American

Nutrition

Serving Size: 1 slice (approx. 1/8 of recipe)
Calories: 420 kcal
Sugar: 3 g
Sodium: 780 mg
Fat: 30 g
Saturated Fat: 12 g
Unsaturated Fat: 15 g
Trans Fat: 0.5 g
Carbohydrates: 20 g
Fiber: 1 g
Protein: 18 g
Cholesterol: 210 mg

Keywords: breakfast casserole, sausage breakfast, baked breakfast, cheddar cheese casserole, savory casserole