Baked Zucchini Spinach Feta Casserole (Printable)
Wholesome Mediterranean layers of zucchini, spinach, and feta baked until golden and set.
# What You'll Need:
→ Vegetables
01 - 2 medium zucchinis, sliced into 1/4-inch rounds
02 - 5 oz fresh baby spinach
03 - 1 small onion, finely chopped
04 - 2 garlic cloves, minced
→ Dairy & Eggs
05 - 6 oz feta cheese, crumbled
06 - 1 cup grated mozzarella cheese
07 - 4 large eggs
08 - 3/4 cup whole or 2% milk
→ Pantry & Seasonings
09 - 2 tbsp extra virgin olive oil
10 - 1/2 tsp dried oregano
11 - 1/4 tsp ground black pepper
12 - 1/4 tsp salt
13 - 1/4 tsp crushed red pepper flakes
→ For Greasing
14 - 1 tbsp butter or additional olive oil
# How-To Steps:
01 - Preheat oven to 375°F. Grease a 9x9-inch baking dish with butter or olive oil.
02 - Heat 1 tbsp olive oil in a large skillet over medium heat. Add chopped onion and sauté for 3 minutes until translucent. Add garlic and cook for 1 minute.
03 - Add spinach and cook, stirring, until wilted, about 2 minutes. Remove from heat and let cool slightly.
04 - In a large bowl, whisk together eggs, milk, oregano, black pepper, and salt until well combined.
05 - Arrange half of the zucchini slices in the prepared baking dish. Spread half of the spinach mixture over the zucchini, then sprinkle with half the feta and mozzarella.
06 - Repeat the layers with remaining zucchini, spinach, feta, and mozzarella.
07 - Pour the egg mixture evenly over the layered vegetables and cheese. Drizzle with remaining olive oil and sprinkle with red pepper flakes, if using.
08 - Bake uncovered for 35 minutes, or until the casserole is set and the top is golden brown.
09 - Let rest for 10 minutes before slicing and serving.
# Expert Advice:
01 -
- Everything comes together in one dish with minimal prep work
- The combination of salty feta and mild mozzarella creates the perfect balance
- It reheats beautifully for lunch the next day
02 -
- Do not skip the resting period or the casserole will be runny when sliced
- Pat your zucchini dry with paper towels if they seem especially water-heavy
03 -
- Use a mandoline for perfectly even zucchini slices
- Room temperature ingredients prevent the custard from separating