Easy Feta and Spinach Casserole

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Creamy, savory, and irresistibly hearty, this Easy Feta and Spinach Casserole is the ultimate comfort food with a healthy twist. Packed with leafy greens and tangy cheese, it hits the perfect balance between indulgent and nourishing. Whether you serve it as a main course, a brunch highlight, or a weeknight side, this dish will win hearts with its flavor and simplicity.

Each bite delivers the saltiness of feta, the earthiness of spinach, and the richness of baked eggs and herbs. With minimal prep and only a handful of ingredients, it’s a reliable go-to when you need something satisfying and wholesome—fast.

What Kind of Feta and Spinach Should I Use?

Go for a good-quality feta cheese—either crumbled or block-style. Bulgarian or Greek feta offers the most authentic tang and creamy crumble. As for spinach, frozen chopped spinach works beautifully in this casserole (just be sure to drain it well), but you can also use fresh spinach that’s been cooked down to remove moisture.

Ingredients for the Easy Feta and Spinach Casserole

• Frozen Chopped Spinach: A convenient base, full of fiber and vitamins. Make sure it’s well-drained to prevent sogginess.
• Feta Cheese: Brings bold, salty creaminess to the dish. Use block feta for a richer texture or crumbled for ease.
• Eggs: Act as the binder, creating that custardy structure that holds the casserole together.
• Yellow Onion: Adds sweetness and depth. Dice it finely for even distribution.
• Garlic: Elevates the savory flavor profile. Fresh minced garlic works best.
• Olive Oil: For sautéing the onions and garlic, and adding subtle richness.
• Salt & Pepper: Basic seasonings that enhance all the other ingredients.
• Dried Oregano or Dill: Optional, but adds a Mediterranean vibe to the casserole.

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How To Make the Easy Feta and Spinach Casserole

Step 1: Sauté the Aromatics

Heat olive oil in a skillet over medium heat. Add the diced onions and cook until softened, about 4-5 minutes. Stir in the minced garlic and cook for another 30 seconds. Remove from heat and let cool slightly.

Step 2: Prepare the Spinach

Thaw the spinach completely and squeeze out all excess water using a clean kitchen towel or cheesecloth. This is crucial for a firm, not watery, casserole.

Step 3: Mix the Filling

In a large bowl, combine the drained spinach, cooked onion and garlic mixture, crumbled feta, eggs, and dried herbs (if using). Season with salt and pepper to taste. Mix until fully incorporated.

Step 4: Bake to Perfection

Transfer the mixture to a greased 8×8″ or similar-sized baking dish. Spread it out evenly. Bake in a preheated 375°F (190°C) oven for 30-35 minutes, or until the top is set and golden. Let it cool for 5-10 minutes before slicing.

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How to Serve and Store the Easy Feta and Spinach Casserole

Serve it warm as a main with a light salad, or enjoy it cold the next day for lunch. This casserole is excellent for meal prep—it keeps well in the fridge for up to 4 days. Reheat slices in the microwave or oven. You can also freeze it in individual portions for up to 2 months.

What to Serve With Easy Feta and Spinach Casserole?

Simple Greek Salad

The freshness of cucumbers, tomatoes, and olives with a lemon-oregano dressing pairs beautifully with the casserole’s richness.

Roasted Cherry Tomatoes

Their sweetness contrasts perfectly with the salty feta.

Garlic Bread or Toasted Pita

Ideal for scooping up every bite.

Tomato Basil Soup

A comforting side that adds extra warmth.

Lemon-Herb Quinoa

A protein-packed, zesty grain that brightens up the plate.

Cucumber Yogurt Dip

Also known as tzatziki, it complements the Mediterranean notes in the casserole.

Grilled Chicken Skewers

Add protein and make it a complete dinner.

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Want More Casserole Ideas with a Healthy Spin?

If this feta and spinach casserole is your thing, check out these other wholesome and delicious bakes:

• Chicken Cordon Bleu Casserole for a creamy, protein-rich twist.
• Cheesy Spinach Stuffed Shells if you’re craving more spinach and cheese comfort.
• Nutella French Toast Casserole for a sweet start to your morning.
• Million Dollar Ravioli Casserole if you’re feeling fancy on a weeknight.
• Walking Taco Casserole for something fun and flavorful with a Tex-Mex flair.

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And let me know in the comments how yours turned out. Did you use fresh spinach or frozen? Add extra herbs or a sprinkle of chili flakes?

I love seeing your creations and tweaks! If you have questions, don’t hesitate—let’s cook together.

Explore more delicious and nourishing dishes on Chef Alchemy’s Pinterest. From easy dinners to healthful snacks, we’ve got something for every taste.

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