If you’re looking for a breakfast or brunch dish that fills your kitchen with irresistible aromas and satisfies both your taste buds and your appetite, the Hearty Sausage Spinach Mushroom Egg Bake Recipe is a true winner. This savory egg bake combines juicy Italian sausage, fresh spinach, and tender mushrooms with fluffy eggs and melted mozzarella cheese, creating a dish so comforting and flavorful that you’ll want to make it again and again. It’s perfect for feeding a crowd or prepping ahead for busy mornings, offering a balance of protein and veggies in every delicious bite.

Ingredients You’ll Need
The ingredients for this recipe are straightforward yet carefully chosen to build layers of flavor and texture. Each component plays a role: from the richness of the sausage and cheese to the earthiness of mushrooms and the freshness of spinach, all held together by fluffy eggs and a touch of seasoning.
- 10 large eggs: The essential base of this bake, providing structure and protein.
- 1/2 cup milk: Mixed with eggs for a fluffier, creamier texture.
- 1 pound Italian sausage: Adds bold, savory flavor and hearty meatiness.
- 3 cups fresh spinach: Offers a fresh, slightly earthy contrast and lovely green color.
- 2 cups sliced mushrooms: Brings a juicy, umami-rich element to balance the sausage.
- 1 cup shredded mozzarella cheese: Melts beautifully for gooey, cheesy goodness.
- 1/2 teaspoon salt: Enhances all the natural flavors.
- 1/4 teaspoon black pepper: Adds just a hint of heat and depth.
- 2 tablespoons olive oil: Used for sautéing, contributing a smooth richness.
How to Make Hearty Sausage Spinach Mushroom Egg Bake Recipe
Step 1: Prepare the Oven and Dish
Start by preheating your oven to 375°F and greasing a 9×13-inch baking dish. This ensures your bake won’t stick and will come out perfectly shaped for slicing.
Step 2: Cook the Sausage
Heat 1 tablespoon of olive oil in a skillet over medium heat. Add the Italian sausage and cook, breaking it up as it browns, until fully cooked and nicely caramelized—about 6 to 8 minutes. Once done, transfer the sausage to a plate and set it aside.
Step 3: Sauté the Mushrooms and Spinach
In the same skillet, add the remaining tablespoon of olive oil. Toss in the sliced mushrooms and cook until they’re golden brown and have released their moisture—about 5 minutes. Next, stir in the fresh spinach and sauté just until wilted. Remove the skillet from heat and let these flavorful veggies cool slightly.
Step 4: Whisk the Egg Mixture
Grab a large bowl and whisk together the eggs, milk, salt, and black pepper until the mixture is smooth and slightly frothy. This step is key for a light, fluffy bake.
Step 5: Combine All Ingredients
Add the cooked sausage, sautéed mushrooms and spinach, and shredded mozzarella to the egg mixture. Stir everything together gently but thoroughly so that every bite is loaded with savory goodness.
Step 6: Transfer to Baking Dish
Pour the combined mixture into the prepared baking dish and smooth the top with a spatula. This helps the bake cook evenly and develop a beautiful golden crust.
Step 7: Bake to Perfection
Place the dish in your preheated oven and bake for 30 to 35 minutes. You’re looking for the center to be just set with edges turning a lovely golden brown, signaling that everything is perfectly cooked through.
Step 8: Rest Before Serving
Once baked, let the egg bake cool for about 5 minutes before slicing. This pause allows it to firm up slightly, making it easier to portion and enhancing the flavors.
How to Serve Hearty Sausage Spinach Mushroom Egg Bake Recipe

Garnishes
A sprinkle of fresh herbs like parsley or chives brightens this dish beautifully. A light dusting of grated parmesan adds a sharp, salty finish, and a dollop of sour cream or salsa on the side brings a lively tang that complements the richness.
Side Dishes
Pair this hearty egg bake with fresh fruit salad or a simple mixed green salad with a citrus vinaigrette to balance the meal’s savory richness. Toasted crusty bread or warm English muffins also make wonderful companions, perfect for soaking up every bit of flavor.
Creative Ways to Present
For a brunch gathering, cut the bake into bite-sized squares and serve on a decorative platter. You can also layer the bake in individual ramekins for a charming presentation. Adding colorful bell peppers or sun-dried tomatoes to the mix gives it a fun twist both visually and flavor-wise.
Make Ahead and Storage
Storing Leftovers
Store any leftovers in an airtight container in the refrigerator for up to 3 days. This egg bake holds its texture and flavor surprisingly well, making for delicious next-day breakfasts or snacks.
Freezing
You can freeze portions of the egg bake by wrapping them tightly in plastic wrap and then aluminum foil or placing them in freezer bags. Frozen portions will keep well for up to 2 months. Thaw overnight in the refrigerator before reheating.
Reheating
Reheat slices in the microwave for about 1 to 2 minutes or until warmed through. For a crispier edge, you can reheat leftovers in a 350°F oven for 10-15 minutes. This way, you get that fresh-baked experience even on a busy day.
FAQs
Can I use a different type of sausage in this recipe?
Absolutely! While Italian sausage brings a nice blend of herbs and spices, you can swap it for breakfast sausage, chorizo, or even turkey sausage depending on your flavor preference and dietary needs.
Is this egg bake suitable for meal prepping?
Yes, it’s fantastic for meal prepping. It keeps well in the fridge and freezes nicely, making it a convenient option for preparing several meals ahead of time.
Can I make this recipe vegetarian?
Definitely! To make it vegetarian, simply omit the sausage and add extra mushrooms, bell peppers, or your favorite vegetables. You might also choose a plant-based sausage alternative to keep that meaty texture.
What’s the best cheese to use?
Mozzarella melts wonderfully and adds a mild flavor, but you can mix it up with cheddar, Monterey Jack, or even pepper jack for a bit of heat.
How do I know when the egg bake is done?
The center should be set but not overly dry. A good test is gently shaking the pan—there should be no liquid jiggle. The edges should be golden and slightly pulling away from the pan sides.
Final Thoughts
There’s something truly special about a homemade egg bake that combines hearty sausage, fresh spinach, and earthy mushrooms, all wrapped up in fluffy eggs and gooey cheese. The Hearty Sausage Spinach Mushroom Egg Bake Recipe is a dish that brings warmth and satisfaction to any table, whether for a busy weekday breakfast or a leisurely weekend brunch. Give it a try—you might just find your new favorite go-to for a nourishing and delicious meal!
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
- Method: Baking
- Cuisine: American
Description
This Hearty Sausage Spinach Mushroom Egg Bake is a delicious and wholesome breakfast or brunch option that combines savory Italian sausage, fresh spinach, sautéed mushrooms, and creamy mozzarella cheese baked to perfection in a fluffy egg mixture.
Ingredients
Egg Mixture
- 10 large eggs
- 1/2 cup milk
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
Vegetables & Sausage
- 1 pound Italian sausage
- 3 cups fresh spinach
- 2 cups sliced mushrooms
- 2 tablespoons olive oil
Cheese
- 1 cup shredded mozzarella cheese
Instructions
- Preheat and Prepare Dish: Preheat your oven to 375°F and grease a 9×13-inch baking dish to ensure the egg bake does not stick.
- Cook Sausage: Heat 1 tablespoon of olive oil in a skillet over medium heat. Add the Italian sausage and cook until it is browned and fully cooked through, about 6 to 8 minutes. Once done, transfer the sausage to a plate and set aside.
- Sauté Vegetables: In the same skillet, add the remaining tablespoon of olive oil. Add the sliced mushrooms and cook for about 5 minutes, allowing them to brown nicely. Then, stir in the fresh spinach and cook until wilted. Remove the skillet from heat once the vegetables are ready.
- Mix Eggs: In a large bowl, whisk together the 10 large eggs, 1/2 cup milk, salt, and black pepper until the mixture is smooth and well combined.
- Combine Ingredients: Add the cooked sausage, sautéed mushrooms and spinach, and shredded mozzarella cheese to the egg mixture. Stir thoroughly to ensure everything is evenly distributed.
- Pour into Baking Dish: Pour the combined mixture into the prepared 9×13-inch baking dish and smooth the top with a spatula to create an even layer.
- Bake: Place the dish in the preheated oven and bake for 30 to 35 minutes, or until the center is just set and the edges turn golden brown, indicating the egg bake is fully cooked.
- Cool and Serve: Remove the egg bake from the oven and let it cool for about 5 minutes before slicing into squares and serving warm.
Notes
- You can substitute Italian sausage with turkey sausage for a leaner version.
- Feel free to add other vegetables like bell peppers or onions to customize the bake.
- This egg bake can be prepared the night before and baked fresh in the morning for a convenient breakfast.
- Leftovers can be refrigerated for up to 3 days and reheated in the oven or microwave.
- Ensure the eggs are fully cooked by checking the center before removing from the oven.

