There’s something incredibly comforting about a warm breakfast casserole, especially one that’s packed with vibrant greens and creamy feta. This Healthy Breakfast Casserole with Spinach and Feta is not just a feast for the taste buds but also a nutritious way to kickstart your day. It combines the goodness of spinach, the richness of eggs, and the delightful tang of feta cheese, all baked to perfection. Whether you’re preparing for a family brunch or meal-prepping for the week ahead, this dish is sure to impress.
Why This Recipe is a Keeper

This Healthy Breakfast Casserole with Spinach and Feta stands out for several reasons. First, it’s incredibly easy to prepare, making it a perfect choice for busy mornings. The combination of ingredients offers a well-rounded meal, packed with protein and vitamins, ensuring you stay energized throughout the day. Plus, it can easily be customized to suit your taste preferences or dietary needs. Best of all, it can be made ahead of time, making your mornings a breeze.
What’s in the Bowl
To create this delicious casserole, you’ll need the following ingredients:
- Olive oil spray – for greasing the baking dish.
- 1 teaspoon olive oil – to sauté the shallots.
- 3 shallots, chopped – for a hint of sweetness and depth of flavor.
- 6-ounce bag baby spinach – packed with nutrients and adds vibrant color.
- 24 large eggs, beaten – the base of the casserole, providing protein and structure.
- 2 cups 2% milk – for creaminess and richness.
- 1/2 cup heavy cream – to enhance the texture.
- 12 ounces feta cheese, crumbled – for a tangy and creamy flavor.
- 3 scallions, chopped – for a fresh, oniony crunch.
- 3 plum tomatoes, seeded and diced – adding freshness and color.
- 2 1/2 teaspoons kosher salt – to season the dish.
- Black pepper, to taste – for an extra kick.
Tools of the Trade
To make your cooking experience smooth and enjoyable, gather the following tools:
- 9×13 inch baking dish – the perfect size for this casserole.
- Large mixing bowl – for combining the egg mixture.
- Whisk – to beat the eggs and mix ingredients well.
- Skillet – for sautéing the shallots.
- Spatula – for mixing and spreading the ingredients in the dish.
- Knife and cutting board – for chopping vegetables.
From Start to Finish: Healthy Breakfast Casserole with Spinach and Feta

Preparing this Healthy Breakfast Casserole with Spinach and Feta is straightforward. Follow these steps for a perfect outcome:
Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C). This ensures that the casserole bakes evenly.
Step 2: Sauté the Shallots
In a skillet over medium heat, add 1 teaspoon of olive oil. Once hot, add the chopped shallots and sauté for about 3-4 minutes, or until they are soft and translucent.
Step 3: Add the Spinach
Add the baby spinach to the skillet with the shallots. Cook for an additional 2-3 minutes until the spinach is wilted. Remove from heat and set aside.
Step 4: Prepare the Egg Mixture
In a large mixing bowl, whisk together the beaten eggs, 2 cups of milk, 1/2 cup of heavy cream, 2 1/2 teaspoons of kosher salt, and black pepper to taste until well combined.
Step 5: Combine Ingredients
Add the sautéed shallots and spinach mixture to the egg mixture. Then fold in the crumbled feta cheese, chopped scallions, and diced tomatoes, mixing gently until everything is well incorporated.
Step 6: Prepare the Baking Dish
Spray a 9×13 inch baking dish with olive oil spray to prevent sticking. Pour the egg and vegetable mixture into the prepared baking dish, spreading it evenly.
Step 7: Bake the Casserole
Place the baking dish in the preheated oven and bake for 35-40 minutes, or until the casserole is set and the top is golden brown.
Step 8: Cool and Serve
Once baked, remove the casserole from the oven and let it cool for a few minutes. Cut into squares and serve warm. Enjoy your Healthy Breakfast Casserole with Spinach and Feta!
Dietary Swaps & Alternatives

If you need to make modifications to the recipe, consider the following swaps:
- Milk Alternatives – Use almond milk or coconut milk for a dairy-free version.
- Cheese Substitutes – Swap feta with goat cheese or a dairy-free cheese for a different flavor.
- Vegetable Additions – Add bell peppers, mushrooms, or zucchini for extra veggies.
- Egg Alternatives – For a vegan option, use a mixture of silken tofu or chickpea flour mixed with water to replace the eggs.
Things That Go Wrong
Cooking can sometimes be unpredictable! Here are a few common pitfalls and how to avoid them:
- Overcooking: Keep an eye on the casserole towards the end of the baking time to prevent it from becoming dry.
- Undercooked Eggs: Ensure that the center of the casserole is set; if it jiggles, it needs more time.
- Sticking: Make sure to adequately grease your baking dish to avoid the casserole sticking to the bottom.
- Flavor Issues: Adjust the seasoning to your taste. Don’t hesitate to add more salt or pepper if needed.
Refrigerate, Freeze, Reheat
This Healthy Breakfast Casserole with Spinach and Feta is perfect for meal prep. Here’s how to store it:
- Refrigerate: Store leftovers in an airtight container in the fridge for up to 4 days.
- Freeze: Cut the casserole into squares and freeze in a single layer. Once frozen, transfer to a freezer bag for up to 3 months.
- Reheat: To reheat, thaw in the fridge overnight and bake at 350°F (175°C) until warmed through, about 20 minutes.
Troubleshooting Q&A
What should I do if my casserole is too dry?
If your casserole turns out dry, it may have been overbaked. Ensure to check for doneness a few minutes before the suggested baking time. You can also add a little extra cream or milk to the egg mixture for more moisture next time.
Can I make this casserole ahead of time?
Absolutely! You can prepare the casserole the night before and refrigerate it unbaked. In the morning, pop it in the oven and bake as directed. This makes breakfast super convenient!
Is it possible to make this casserole vegetarian?
Yes, this recipe is already vegetarian! Just ensure that the feta cheese you use is suitable for your dietary preferences.
What can I serve with the casserole?
This casserole pairs wonderfully with fresh fruit, a side salad, or whole grain toast for a complete breakfast experience.
Quick Weeknight Wins
If you love this Healthy Breakfast Casserole with Spinach and Feta, you might also enjoy these quick and healthy recipes:
- Veggie Omelette – A quick and customizable breakfast option.
- Avocado Toast – Simple and nutritious, perfect for busy mornings.
- Smoothie Bowl – A refreshing and easy breakfast packed with nutrients.
- Healthy Banana Bread – Great for a grab-and-go breakfast or snack.
Wrap-Up
In a world where mornings can feel rushed and chaotic, having a Healthy Breakfast Casserole with Spinach and Feta ready to go can be a game-changer. It’s simple to prepare, filled with wholesome ingredients, and can be tailored to fit your taste. Whether you’re indulging in a leisurely breakfast or fueling up for a busy day ahead, this casserole is sure to become a staple in your kitchen.
Embrace the ease of meal prep and the joy of delicious, healthy eating with this recipe. Your mornings will thank you!

Healthy Breakfast Casserole with Spinach and Feta
Ingredients
Ingredients
- 1 spray Olive oil spray for greasing the baking dish
- 1 teaspoon Olive oil to sauté the shallots
- 3 count Shallots chopped
- 6 ounce Baby spinach packed with nutrients
- 24 large Eggs beaten
- 2 cups 2% milk for creaminess
- 1/2 cup Heavy cream to enhance the texture
- 12 ounces Feta cheese crumbled
- 3 count Scallions chopped
- 3 count Plum tomatoes seeded and diced
- 2 1/2 teaspoons Kosher salt to season the dish
- to taste Black pepper for an extra kick
Instructions
Instructions
- Step 1: Preheat your oven to 350°F (175°C).
- Step 2: In a skillet over medium heat, add 1 teaspoon of olive oil and sauté the chopped shallots for about 3-4 minutes until soft.
- Step 3: Add the baby spinach to the skillet and cook for an additional 2-3 minutes until wilted. Remove from heat.
- Step 4: In a large mixing bowl, whisk together the beaten eggs, 2 cups of milk, 1/2 cup of heavy cream, kosher salt, and black pepper until well combined.
- Step 5: Fold in the sautéed shallots and spinach, crumbled feta cheese, chopped scallions, and diced tomatoes.
- Step 6: Spray a 9x13 inch baking dish with olive oil spray and pour the egg mixture into it, spreading evenly.
- Step 7: Bake for 35-40 minutes until set and golden brown.
- Step 8: Let cool for a few minutes, cut into squares, and serve warm.
Equipment
- 9x13 inch Baking Dish
- Large Mixing Bowl
- Whisk
- Skillet
- Spatula
- Knife
- Cutting Board
Notes
- Store leftovers in an airtight container in the fridge for up to 4 days.
- Freeze cut squares in a single layer for up to 3 months.
- To reheat, thaw overnight and bake at 350°F until warmed through.
