If you’re craving a breakfast or brunch dish that feels like a warm, comforting hug, look no further than this Hearty Sausage Spinach Mushroom Egg Bake Recipe. It combines savory Italian sausage, fresh spinach, and earthy mushrooms baked into a fluffy, cheesy egg base that’s perfect for feeding a crowd or meal prepping for the week. Every bite offers a satisfying blend of flavors and textures that will have you reaching for seconds – or thirds! This recipe is straightforward to prepare yet delivers impressive results, making it a reliable go-to for mornings when you want something both nourishing and indulgent.

Ingredients You’ll Need
These simple ingredients are the magic behind this Hearty Sausage Spinach Mushroom Egg Bake Recipe. Each one plays an essential role in building layers of flavor, from the juicy, slightly spicy sausage to the tender, wilted spinach and savory mushrooms. The cheese adds that perfect melty richness, while the eggs bind everything together into a satisfying, filling dish.
- 10 large eggs: The base of the bake, providing structure and protein for a hearty meal.
- 1/2 cup milk: Adds creaminess to keep the eggs tender and light.
- 1 pound Italian sausage: Brings bold, savory flavor and a pleasant meaty texture.
- 3 cups fresh spinach: Offers a fresh, vibrant green color and a nutritional boost.
- 2 cups sliced mushrooms: Adds an earthy, umami depth that complements the sausage.
- 1 cup shredded mozzarella cheese: Melts beautifully to bind ingredients together with cheesy goodness.
- 1/2 teaspoon salt: Enhances all the flavors without overpowering.
- 1/4 teaspoon black pepper: Gives a subtle spicy kick that brightens the dish.
- 2 tablespoons olive oil: Used for cooking the sausage and vegetables to perfection.
How to Make Hearty Sausage Spinach Mushroom Egg Bake Recipe
Step 1: Preparing Your Oven and Dish
Start by preheating your oven to 375°F, so it’s ready to go when your egg bake mixture is assembled. Grab a 9×13-inch baking dish and give it a generous grease to prevent sticking, ensuring your beautiful bake slides right out when it’s done.
Step 2: Cooking the Sausage
Heat 1 tablespoon of olive oil in a skillet over medium heat. Add your Italian sausage, breaking it up as it cooks, and brown it thoroughly for about 6 to 8 minutes. This step develops rich flavors and ensures your meat is fully cooked and irresistibly savory. Once browned, transfer the sausage to a plate to cool slightly.
Step 3: Sautéing Vegetables
In the same skillet, add the remaining tablespoon of olive oil. Toss in the sliced mushrooms and cook them for roughly 5 minutes until they take on a lovely golden-brown hue and soften up. Stir in the fresh spinach and sauté just until it wilts, which only takes a minute or two. This combo adds moisture and earthiness without overwhelming the dish.
Step 4: Whisking the Egg Mixture
In a large bowl, whisk the eggs and milk together until smooth and combined. Add the 1/2 teaspoon salt and 1/4 teaspoon black pepper for seasoning. A well-mixed egg base is the secret to that fluffy, tender texture everyone will love.
Step 5: Combining Ingredients
Now, fold the cooked sausage, sautéed mushrooms and spinach, and shredded mozzarella into the egg mixture. Stir everything well so that each bite will be packed with flavor, color, and cheesy richness. This step ties together all the delicious components of the Hearty Sausage Spinach Mushroom Egg Bake Recipe.
Step 6: Baking
Pour your savory mixture into the prepared baking dish and smooth out the top for even cooking. Place it in the preheated oven and bake for 30 to 35 minutes, or until the center is just set and the edges have turned a lovely golden color. This baking time ensures the eggs are perfectly cooked but still moist and tender.
Step 7: Cooling and Serving
Once baked, let your egg bake cool for about 5 minutes. This resting time helps it firm up a little so your slices hold perfectly when served. Then cut into squares and get ready to impress everyone at your table!
How to Serve Hearty Sausage Spinach Mushroom Egg Bake Recipe
Garnishes
If you want to dress up your egg bake, consider sprinkling fresh chopped herbs like parsley or chives over the top just before serving. A light drizzle of hot sauce or a dollop of sour cream can also add an exciting contrast to the savory richness.
Side Dishes
This dish pairs wonderfully with simple sides like a crisp green salad dressed with lemon vinaigrette or a bowl of fresh fruit to add brightness and balance. Toasted crusty bread or hash browns also make fantastic companions for a truly satisfying meal.
Creative Ways to Present
You could serve this egg bake in individual ramekins for an elegant touch, or cut it into bite-sized squares passed around as party appetizers. It’s versatile enough for casual family breakfasts or special brunch gatherings alike.
Make Ahead and Storage
Storing Leftovers
Leftover Hearty Sausage Spinach Mushroom Egg Bake Recipe can be stored in an airtight container in the refrigerator for up to 4 days. It keeps really well and flavors even deepen, making it a convenient option for busy mornings.
Freezing
You can freeze this egg bake for longer storage by slicing it into portions and wrapping them tightly in plastic wrap and foil. Freeze for up to 2 months and thaw overnight in the fridge before reheating.
Reheating
Reheat slices gently in the microwave or in a low oven around 325°F until warmed through. This helps preserve the texture and prevents the eggs from becoming rubbery.
FAQs
Can I use turkey sausage instead of Italian sausage?
Absolutely! Turkey sausage is a great leaner alternative that will still provide plenty of flavor. Just adjust the seasoning accordingly since turkey sausage tends to be milder.
Is it possible to make this recipe vegetarian?
Yes, simply omit the sausage and add extra mushrooms, bell peppers, or even some cooked lentils for a hearty vegetarian version that’s still packed with taste.
Can I prepare this dish the night before?
Definitely. You can mix all the ingredients and keep the baking dish covered in the fridge overnight. Bake it fresh the next morning for a time-saving breakfast solution.
What cheese works best if I don’t have mozzarella?
Cheddar, Monterey Jack, or even a mild Swiss cheese are excellent substitutes that melt well and pair nicely with the other ingredients.
How do I ensure the egg bake cooks evenly?
Using a 9×13-inch baking dish as recommended helps the bake cook evenly. Also, make sure your ingredients aren’t too hot before combining to avoid uneven baking.
Final Thoughts
There’s something truly special about a dish that’s both comforting and impressive without a fuss, and this Hearty Sausage Spinach Mushroom Egg Bake Recipe fits the bill perfectly. Whether you’re feeding a family, prepping ahead, or hosting brunch with friends, it’s sure to become one of your favorites. So go ahead and give it a try – I promise it will fill your kitchen with delicious aromas and your table with happy smiles!
Print
Hearty Sausage Spinach Mushroom Egg Bake Recipe
- Prep Time: 10 minutes
- Cook Time: 35 minutes
- Total Time: 45 minutes
- Yield: 12 servings
- Category: Breakfast Casserole
- Method: Baking
- Cuisine: American
Description
This Hearty Sausage Spinach Mushroom Egg Bake is a delicious and satisfying breakfast casserole packed with protein-rich eggs, flavorful Italian sausage, fresh spinach, and earthy mushrooms, all topped with melted mozzarella cheese. Baked to golden perfection, it’s perfect for family breakfasts or meal prepping.
Ingredients
Egg Mixture
- 10 large eggs
- 1/2 cup milk
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
Meat and Vegetables
- 1 pound Italian sausage
- 3 cups fresh spinach
- 2 cups sliced mushrooms
Other
- 1 cup shredded mozzarella cheese
- 2 tablespoons olive oil
Instructions
- Preheat and Prepare Dish: Preheat your oven to 375°F (190°C) and grease a 9×13-inch baking dish to prevent sticking.
- Cook Sausage: Heat 1 tablespoon of olive oil in a skillet over medium heat. Add the Italian sausage and cook for 6–8 minutes, stirring occasionally, until browned and fully cooked. Remove the sausage from the skillet and transfer it to a plate.
- Sauté Vegetables: In the same skillet, add the remaining tablespoon of olive oil. Add the sliced mushrooms and cook for about 5 minutes until they are browned. Stir in the fresh spinach and sauté until wilted. Remove the skillet from heat.
- Mix Egg Base: In a large bowl, whisk together the eggs, milk, salt, and black pepper until the mixture is smooth and well combined.
- Combine Ingredients: Add the cooked sausage, sautéed vegetables, and shredded mozzarella cheese to the egg mixture. Stir everything together thoroughly to incorporate all ingredients evenly.
- Fill Baking Dish: Pour the combined mixture into the greased baking dish and smooth the top with a spatula for even cooking.
- Bake: Place the baking dish in the preheated oven and bake for 30–35 minutes, or until the center is just set and the edges turn golden brown.
- Cool and Serve: Remove the bake from the oven and let it cool for 5 minutes. Slice into portions and serve warm.
Notes
- You can substitute turkey sausage for a leaner option.
- Fresh spinach can be replaced with frozen spinach, just ensure it is well drained before cooking.
- Use any type of cheese you prefer, such as cheddar or pepper jack, for a different flavor profile.
- Make sure to grease the baking dish well to avoid sticking.
- Leftovers can be refrigerated for up to 3 days and reheated in the microwave.

