Breakfast Casserole with Spinach and Feta

This Spinach and Feta Breakfast Casserole is a delicious way to start your morning with fluffy baked eggs, tender spinach, creamy feta cheese, and fresh Mediterranean-inspired flavors. Sweet red bell peppers, scallions, and juicy cherry tomatoes bring color and freshness to every bite. With just 10 minutes of prep time, this satisfying breakfast casserole is perfect for busy mornings, weekend brunches, or preparing breakfast ahead of time.

Fresh baby spinach brings a tender texture and vibrant color, while crumbled feta cheese adds a deliciously tangy, savory flavor. Combined with fluffy baked eggs, sweet bell peppers, and fresh herbs, every bite delivers a satisfying balance of Mediterranean-inspired flavors. It's a simple, wholesome breakfast that feels special enough for a weekend brunch yet easy enough for any morning.

Why You'll Love This Spinach and Feta Breakfast Casserole

One of the best things about this Spinach and Feta Breakfast Casserole is how easily it fits into your morning routine. With just 10 minutes of preparation, it's an excellent choice for busy weekdays, relaxed weekend brunches, or entertaining family and friends.

You can also make it your own by adding sautéed mushrooms, extra bell peppers, or cooked breakfast sausage. For an extra burst of Mediterranean flavor, try adding a sprinkle of oregano or fresh basil.

Make-Ahead Tip: Chop the vegetables the night before and refrigerate them in an airtight container. In the morning, simply whisk the eggs, assemble the casserole, and bake until golden and set.

Prep Time: 10 minutes
Cook Time: 25–30 minutes
Total Time: 35–40 minutes
Servings: 2–4

Difficulty: Easy
Texture: Fluffy baked eggs with tender vegetables and creamy feta cheese
Best For: Breakfast, weekend brunch, and meal prep

Ingredients for Spinach and Feta Breakfast Casserole

• Extra Virgin Olive Oil: A little olive oil helps prevent the casserole from sticking to the baking dish while adding a subtle Mediterranean flavor. Use a good-quality extra virgin olive oil for the best results.
• Baby Spinach, Chopped: Fresh baby spinach adds vibrant color, a mild earthy flavor, and valuable nutrients to this breakfast casserole. Its tender leaves blend beautifully with the fluffy eggs and creamy feta cheese. For the best texture, thoroughly dry the spinach before chopping to prevent excess moisture in the casserole.
• Red Bell Pepper, Finely Diced: Sweet red bell pepper adds vibrant color, natural sweetness, and a pleasant texture to this spinach and feta breakfast casserole. Dice it into small, even pieces so it cooks evenly alongside the eggs and spinach. Red bell peppers are also an excellent source of vitamin C.
• Scallions, Sliced: Fresh scallions bring a delicate onion flavor that complements the creamy feta cheese and tender spinach without overpowering the casserole. Use both the white and green portions for extra flavor, freshness, and color. Slice them thinly so they blend evenly throughout the baked eggs.
• Large Eggs: Eggs form the protein-rich foundation of this Spinach and Feta Breakfast Casserole, holding the vegetables and cheese together while creating a tender, fluffy texture. Whisk the eggs thoroughly with the milk to ensure an even consistency and a light, satisfying casserole.
• Milk: Milk adds moisture and richness to the egg mixture, helping create a tender, creamy breakfast casserole. Whole milk provides a slightly richer texture, while 2% milk also works well. Whisk it thoroughly with the eggs for a smooth, evenly baked result.

• Fresh Parsley, Chopped: Fresh parsley brings a bright, slightly peppery flavor that balances the richness of the eggs and feta. Chop it finely and whisk it into the egg mixture for even flavor throughout the casserole.
• Feta Cheese, Crumbled: Tangy, salty feta adds the signature Mediterranean flavor. Crumble it evenly over the egg mixture so each serving gets a little cheese. Taste before adding extra salt, since feta is already salty.
• Cherry Tomatoes, Halved: Juicy cherry tomatoes add a pop of sweetness and color. Arrange the halves over the casserole before baking, and avoid adding too many to keep the eggs from becoming watery.
• Sea Salt and Black Pepper, to Taste: Season the vegetables and egg mixture lightly to bring out their flavors. Since feta is salty, start with less salt and adjust to your preference.

Directions

Step 1 — Prepare the baking dish: Preheat the oven to 375°F (190°C). Grease a medium casserole dish with one teaspoon of extra virgin olive oil.

Step 2 — Add the vegetables: Spread the chopped baby spinach, diced red bell pepper, and sliced scallions evenly in the prepared dish. Season lightly with salt and black pepper.

Step 3 — Whisk the eggs: In a medium bowl, whisk the eggs, milk, and chopped fresh parsley until smooth and slightly frothy. Add black pepper and a little salt, keeping in mind that feta is naturally salty.

Step 4 — Assemble: Pour the egg mixture over the vegetables. Sprinkle crumbled feta evenly on top and arrange the halved cherry tomatoes over the surface.

Step 5 — Bake: Bake for approximately 25–30 minutes, until the center is set and the top is lightly golden. If the center is still wet, continue baking and check again after a few minutes.

Step 6 — Rest and serve: Let the casserole stand for about 5 minutes before slicing. Serve warm.

What to Serve with Spinach and Feta Breakfast Casserole

Make breakfast or brunch feel extra special with a fresh, colorful side. Here are a few recipes to serve alongside your casserole.

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• Stuffed Pineapple Fruit Salad offers a refreshing, sweet contrast to the savory eggs and feta.
• Cinnamon Granola Greek Yogurt adds a creamy, crunchy breakfast pairing.
• Green Bean Salad with Tomatoes and Feta makes a fresh, vegetable-forward addition to a brunch spread.
• Sweet Potato Breakfast Hash is a hearty side that pairs nicely with the tender egg casserole.
• Loaded Avocado Baked Eggs is another savory egg dish to consider when planning a larger breakfast menu.

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Make-Ahead and Storage Tips

Prepare ahead: Chop the vegetables the night before and refrigerate them in a covered container. Whisk the eggs and assemble the casserole just before baking.

Refrigerate leftovers: Cool promptly, cover, and refrigerate within two hours. Store for 3–4 days.

Reheat: Warm individual portions in the microwave or covered in the oven until heated through to 165°F.

Frequently Asked Questions

Can I use frozen spinach? Yes. Thaw it completely and squeeze out the excess water before adding it to the casserole.

How do I keep the casserole from becoming watery? Dry fresh spinach well, drain thawed spinach thoroughly, and avoid adding too many juicy vegetables.

Can I swap the vegetables? Yes. Try sautéed mushrooms or extra bell peppers. Cook and drain moisture-rich additions first.

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