Baked Zucchini Spinach and Feta Casserole Recipe

If you’re on the lookout for a delightful dish that feels both fresh and indulgent, this Baked Zucchini Spinach and Feta Casserole Recipe is an absolute winner. It combines tender zucchini slices, vibrant spinach, and tangy crumbled feta all baked into a creamy, cheesy masterpiece that’s perfect for any meal. What makes this casserole so special is how effortlessly these simple ingredients come together to create layers of flavor, texture, and a touch of warmth, making it a comforting favorite you’ll want to share again and again.

Ingredients You’ll Need

The magic of this recipe lies in its straightforward yet thoughtful choice of ingredients. Each one plays a crucial role, whether it’s adding freshness, creaminess, or a pop of savory flavor that elevates the whole dish.

• 2 medium zucchinis, thinly sliced: The zucchini provides a tender, slightly sweet base that roasts beautifully in the oven.
• 1 tablespoon olive oil: A small touch of richness that helps soften the onions and bring everything together.
• 1 medium onion, chopped: Adds natural sweetness and depth when sautéed to translucent perfection.
• 2 cloves garlic, minced: Garlic infuses the spinach mixture with aromatic warmth and a subtle kick.
• 4 cups fresh spinach, chopped: This leafy green not only boosts color but also adds a mild earthiness and plenty of nutrients.
• 1 cup feta cheese, crumbled: The feta’s briny, creamy sharpness is the star flavor, balancing the veggies beautifully.
• 3 large eggs: Eggs bind the casserole, giving it that custardy, satisfying texture.
• 1/2 cup milk: Works with eggs to create a smooth, rich base throughout the layers.
• 1/2 cup grated Parmesan cheese: Parmesan adds a nutty, savory note that deepens the overall flavor.
• 1 teaspoon dried oregano: Brings a Mediterranean flair and herbaceous brightness to the mix.
• 1/2 teaspoon salt: Enhances all the natural flavors of the vegetables and cheeses.
• 1/4 teaspoon black pepper: Adds just enough heat to keep things interesting without overpowering.
• 1/4 teaspoon crushed red pepper flakes (optional): Optional for a hint of spicy warmth if you like a little kick.
• 2 tablespoons breadcrumbs: Sprinkled on top for a golden, satisfying crunch that contrasts the creamy interior.

How to Make Baked Zucchini Spinach and Feta Casserole Recipe

Step 1: Prepare Your Oven and Dish

Start by preheating your oven to 375°F (190°C). While it warms up, grease a medium-sized casserole dish so your layers won’t stick and you’ll get that perfect golden crust.

Step 2: Sauté the Aromatics

Heat olive oil in a skillet over medium heat. Toss in the chopped onion and cook until it becomes translucent and sweet, which usually takes about 4 minutes. This step builds a flavorful foundation for the spinach to come.

Step 3: Add Garlic for Aroma

Mix in the minced garlic and cook it for about 1 minute until fragrant—watch it closely so it doesn’t burn. Garlic’s subtle pungency is essential here to elevate the entire casserole.

Step 4: Wilt the Spinach

Now add the chopped fresh spinach to the skillet and stir until it just wilts, about 2 to 3 minutes. The spinach should still be vibrant green and soft, locking in its nutrients and flavor.

Step 5: Whisk the Creamy Mixture

In a large bowl, whisk the eggs with milk until fully combined. Stir in grated Parmesan, oregano, salt, black pepper, and the optional crushed red pepper flakes. This blend acts as the lush binding agent that holds your casserole together.

Step 6: Layer Half the Zucchini

Place half of the thin zucchini slices evenly on the bottom of your prepared casserole dish. This first layer sets the stage for the layers to build up and bake evenly.

Step 7: Add Half the Spinach and Feta

Spread half of the spinach mixture over the zucchini, then sprinkle half of the crumbled feta cheese on top. These layers promise great contrast in texture and flavor in every bite.

Step 8: Repeat the Layers

Build the next layer with the remaining zucchini, followed by the rest of the spinach mixture and the remaining feta cheese. This repetition ensures every forkful is equally delicious.

Step 9: Pour the Egg Mixture

Evenly pour the egg and milk mixture over the layered veggies and cheese. It will seep down and bind all the flavors together once it bakes.

Step 10: Add Breadcrumb Topping

Sprinkle breadcrumbs generously over the top to create a golden, crunchy crust that contrasts beautifully with the creamy filling beneath.

Step 11: Bake Until Golden and Set

Bake in your preheated oven for 30 to 35 minutes until the topping is golden brown and the casserole is fully set. Let it rest for a few minutes before slicing—it’s worth the wait!

How to Serve Baked Zucchini Spinach and Feta Casserole Recipe

Garnishes

A sprinkle of freshly chopped parsley or basil over the casserole adds a pop of fresh green color and an herbal note that lifts the entire dish.

Side Dishes

This casserole pairs beautifully with a simple green salad or some warm, crusty bread. If you want a heartier meal, roasted potatoes or a light grain like quinoa complement it perfectly.

Creative Ways to Present

For a special gathering, serve the casserole in individual ramekins and top each portion with a drizzle of high-quality olive oil and a few lemon zest shavings for brightness. It makes the dish feel extra special and inviting.

Make Ahead and Storage

Storing Leftovers

Place any leftovers in an airtight container and store them in the refrigerator. The casserole keeps well for up to 3 days, and flavors tend to meld even more after resting.

Freezing

You can freeze portions of the baked zucchini spinach and feta casserole recipe in freezer-safe containers for up to 2 months. Thaw overnight in the fridge before reheating to preserve texture and flavor.

Reheating

Reheat leftovers gently in the oven at 350°F (175°C) for about 15 minutes or until warmed through. Avoid microwaving when possible to keep the breadcrumb topping crisp.

FAQs

Can I use frozen spinach instead of fresh?

Yes, but be sure to fully thaw and squeeze out excess water from the frozen spinach to avoid a watery casserole.

Is this casserole gluten-free?

To make it gluten-free, simply swap the breadcrumbs with a gluten-free alternative or omit them entirely.

Can I substitute the feta cheese?

Absolutely! Goat cheese or ricotta can be tasty alternatives, though they will change the flavor profile slightly.

How spicy is this casserole?

The crushed red pepper flakes add a gentle heat, but you can easily omit this ingredient if you prefer a milder dish.

Can this be made vegetarian?

This dish is naturally vegetarian, as it contains no meat. Just be sure to use vegetarian-friendly cheeses if that’s a concern.

Final Thoughts

This Baked Zucchini Spinach and Feta Casserole Recipe is a true crowd-pleaser, blending fresh veggies and tangy cheese into a layered delight that feels both nourishing and comforting. It’s easy to prepare, adaptable, and perfect for sharing with family or friends. Trust me, once you try it, this casserole will earn a permanent spot in your kitchen favorites. Go ahead and give it a whirl—you won’t be disappointed!

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