Baked Zucchini, Spinach, and Feta Casserole
Baked Zucchini, Spinach, and Feta Casserole is a delightful dish that combines fresh vegetables with creamy feta cheese for a nutritious meal. This casserole is perfect for family dinners, potlucks, or as a hearty side dish. Its unique blend of flavors not only satisfies your taste buds but also provides a healthy dose of veggies. Plus, it’s easy to prepare and can be enjoyed by everyone, including those who follow vegetarian or low-carb diets.
Why You’ll Love This Recipe
- Easy to Prepare: With simple ingredients and straightforward instructions, this casserole comes together quickly.
- Nutritious and Flavorful: Packed with spinach and zucchini, it’s an excellent way to incorporate more vegetables into your diet without sacrificing taste.
- Versatile Dish: Perfect as a main course or side dish, this casserole fits various occasions from casual dinners to festive gatherings.
- Kid-Friendly: The cheesy goodness makes it appealing to children, helping them enjoy their veggies without fuss.
- Make Ahead Option: You can prepare this casserole in advance and bake it right before serving for added convenience.

Tools and Preparation
Before you start making the Baked Zucchini, Spinach, and Feta Casserole, gather your kitchen tools. Having everything ready ensures a smooth cooking process.
Essential Tools and Equipment
- Large skillet
- Mixing bowl
- 9 x 13 inch casserole dish
- Non-stick cooking spray
- Knife and cutting board
Importance of Each Tool
- Large Skillet: Ideal for sautéing the vegetables evenly and quickly.
- Mixing Bowl: Essential for combining all ingredients thoroughly for even flavor distribution.
- Casserole Dish: A perfect size for baking the mixture while allowing it to cook evenly.
Ingredients
This dish packs a hearty dose of veggies and all the cheesy goodness that you look for in a casserole.
Vegetables
- 2 tablespoons olive oil
- 3 cups baby spinach
- 2 zucchini (small, diced small)
- 2 yellow squash (small, diced small, OR 2 more zucchini if yellow squash is unavailable)
Cheeses and Breading
- 1/4 cup feta cheese crumbles (fat-free)
- 1/4 cup parmesan cheese (low-fat, grated)
- 1/4 cup whole-wheat panko breadcumbs
Binder Ingredients
- 2 egg whites
- 1/2 teaspoon kosher salt
- 2 teaspoons garlic powder
- 1/2 teaspoon ground black pepper
- 1 teaspoon dried basil leaves
How to Make Baked Zucchini, Spinach, and Feta Casserole
Step 1: Preheat the Oven
Preheat the oven to 400 degrees Fahrenheit. Spray your 9 x 13 inch casserole dish with non-stick spray to prevent sticking.
Step 2: Sauté the Vegetables
In a large skillet over medium heat:
1. Add the olive oil.
2. Once hot, add the baby spinach, diced zucchini, and yellow squash.
3. Cook for about 5 minutes until the spinach wilts and the squash softens.
4. Drain any excess liquid from the vegetables.
Step 3: Mix Ingredients
In a large mixing bowl:
1. Combine the sautéed vegetable mix with all remaining ingredients.
2. Stir well until everything is evenly coated.
Step 4: Bake the Casserole
Spread the mixture evenly in the prepared casserole dish:
1. Bake in your preheated oven for 30 to 40 minutes or until golden brown on top.
2. Let it cool slightly before serving.
Enjoy your delicious Baked Zucchini, Spinach, and Feta Casserole!
How to Serve Baked Zucchini, Spinach, and Feta Casserole
Baked Zucchini, Spinach, and Feta Casserole is a versatile dish that can be served in various ways. Whether as a main course or a side, it pairs beautifully with different flavors and textures.
As a Main Dish
- Serve it warm straight from the oven for a hearty meal that satisfies.
- Top with fresh herbs like parsley or basil for added flavor.
With a Side Salad
- Pair with a light garden salad for a refreshing contrast.
- A Caesar salad complements the cheesy richness of the casserole.
With Grains
- Serve over a bed of quinoa or brown rice for extra nutrition.
- Mix with couscous to create a delightful grain bowl.
As Leftovers
- Enjoy cold as part of a lunch box.
- Reheat in the microwave for a quick snack or meal.
How to Perfect Baked Zucchini, Spinach, and Feta Casserole
Achieving the perfect Baked Zucchini, Spinach, and Feta Casserole is simple with these helpful tips. Follow these suggestions to enhance your dish.
- Use Fresh Ingredients: Fresh zucchini and spinach will provide better flavor and texture compared to frozen options.
- Adjust Seasonings: Feel free to customize spices according to your taste. Adding red pepper flakes can give it an extra kick.
- Ensure Even Cooking: Make sure to spread the mixture evenly in the casserole dish for uniform cooking and browning.
- Let It Rest: Allow the casserole to cool slightly before serving. This helps it set up nicely for better slices.
- Experiment with Cheese: Try mixing in other cheeses like mozzarella or goat cheese for varied flavors.
- Add More Veggies: Incorporate other vegetables such as diced bell peppers or mushrooms for added nutrition and taste.
Best Side Dishes for Baked Zucchini, Spinach, and Feta Casserole
Complementing your Baked Zucchini, Spinach, and Feta Casserole with the right sides can elevate your meal. Here are some great options to consider.
- Garlic Bread: A crispy garlic bread adds crunch and flavor that pairs well with the casserole’s softness.
- Roasted Vegetables: Seasonal roasted veggies bring out natural sweetness and add color to your plate.
- Quinoa Salad: A light quinoa salad tossed with lemon dressing enhances the freshness of your meal.
- Steamed Green Beans: Simple steamed green beans provide a nutritious side that’s easy to prepare.
- Coleslaw: A tangy coleslaw offers crunch and acidity that balances the richness of the casserole.
- Cucumber Salad: A refreshing cucumber salad adds coolness, making it an excellent choice alongside warm dishes.
Common Mistakes to Avoid
When making a Baked Zucchini, Spinach, and Feta Casserole, there are common pitfalls that can affect the final result. Here are some mistakes to avoid:
- Skipping the draining step – Not draining excess liquid from the cooked veggies can lead to a soggy casserole. Always drain before mixing.
- Using low-quality cheese – Cheap cheese can alter the flavor and texture. Opt for good quality feta and parmesan for the best results.
- Overcrowding the dish – Packing too many ingredients can cause uneven cooking. Make sure to spread the mixture evenly in the casserole dish.
- Ignoring oven temperature – Cooking at the wrong temperature may result in an undercooked or overcooked casserole. Always preheat your oven as instructed.
- Not letting it cool slightly – Serving immediately may cause it to fall apart. Allow it to set for a few minutes before serving for better slices.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container.
- Keep in the fridge for up to 3-4 days.
Freezing Baked Zucchini, Spinach, and Feta Casserole
- Use a freezer-safe container.
- Can be frozen for up to 2-3 months.
Reheating Baked Zucchini, Spinach, and Feta Casserole
- Oven – Preheat to 350°F (175°C) and bake until heated through.
- Microwave – Heat on medium power, stirring occasionally until warm.
- Stovetop – Place in a skillet over medium heat, stirring gently until warmed.
Frequently Asked Questions
Here are some commonly asked questions about Baked Zucchini, Spinach, and Feta Casserole.
How do I make Baked Zucchini, Spinach, and Feta Casserole gluten-free?
You can substitute whole-wheat panko with gluten-free breadcrumbs or crushed gluten-free crackers for a delicious alternative.
Can I add more vegetables to my Baked Zucchini, Spinach, and Feta Casserole?
Absolutely! Feel free to incorporate bell peppers or mushrooms for added flavor and nutrition.
Is Baked Zucchini, Spinach, and Feta Casserole suitable for meal prep?
Yes! This casserole stores well in both the refrigerator and freezer, making it perfect for meal prep.
What is the best way to serve Baked Zucchini, Spinach, and Feta Casserole?
Serve it warm as a main dish or side alongside grilled chicken or fish for a complete meal.
Final Thoughts
The Baked Zucchini, Spinach, and Feta Casserole is not only delicious but also versatile. With its combination of fresh vegetables and cheesy goodness, this dish is perfect for family dinners or potlucks. Don’t hesitate to customize it with your favorite ingredients or spices!
Baked Zucchini, Spinach, and Feta Casserole
Baked Zucchini, Spinach, and Feta Casserole is a wholesome and delicious dish that brings together the freshness of zucchini and spinach with the creamy richness of feta cheese. This versatile casserole is perfect for family dinners, potlucks, or as a satisfying side dish. Its unique flavor profile satisfies both taste buds and nutritional needs, making it an excellent choice for vegetarians and those on low-carb diets. Easy to prepare and packed with nutrients, this casserole will become a staple in your kitchen.
- Prep Time: 15 minutes
- Cook Time: 35 minutes
- Total Time: 50 minutes
- Yield: Serves approximately six people 1x
- Category: Main
- Method: Baking
- Cuisine: Mediterranean
Ingredients
- 2 tablespoons olive oil
- 3 cups baby spinach
- 2 small zucchini, diced
- 2 small yellow squash, diced (or additional zucchini)
- 1/4 cup fat-free feta cheese crumbles
- 1/4 cup low-fat parmesan cheese, grated
- 1/4 cup whole-wheat panko breadcrumbs
- 2 egg whites
- 1/2 teaspoon kosher salt
- 2 teaspoons garlic powder
- 1/2 teaspoon ground black pepper
- 1 teaspoon dried basil
Instructions
- Preheat oven to 400°F (200°C) and spray a 9 x 13 inch casserole dish with non-stick spray.
- In a large skillet over medium heat, add olive oil and sauté spinach, zucchini, and yellow squash for about 5 minutes until softened. Drain excess liquid.
- In a mixing bowl, combine vegetables with feta, parmesan, panko, egg whites, salt, garlic powder, black pepper, and basil. Mix well.
- Spread mixture evenly in the prepared casserole dish and bake for 30 to 40 minutes until golden brown.
Nutrition
- Serving Size: about 1 cup (150g)
- Calories: 180
- Sugar: 3g
- Sodium: 300mg
- Fat: 7g
- Saturated Fat: 3g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 20g
- Fiber: 5g
- Protein: 10g
- Cholesterol: 10mg