Name: Spinach Quiche Recipe With Feta Cheese
Prep time: 15 min
Cook time: 45 min
Total time: 60 min
Ingredients: 10 large eggs; 1 tbsp. Italian seasoning; 1 tbsp. garlic powder; 1 tbsp. onion powder; 1 cup diced red onion; ½ cup sliced Kalamata olives; 2 cups frozen spinach; ½ pint halved cherry tomatoes ((or grape tomatoes)); ½ cup crumbled feta cheese; 1 tbsp. olive oil; salt and pepper (to taste at serving)

Facebook Pinterest X (Twitter) Reddit Flip it

Jump to Recipe Print Recipe

This spinach quiche made with feta cheese and Mediterranean vegetables is a Mediterranean-style breakfast that will not disappoint. Every bite is a new flavor combination that never disappoints.

If you want something new for breakfast, this quiche does not disappoint. It’s quick and easy to put together and tastes amazing, thanks to all those deliciously flavored additions. It’s an incredibly versatile dish, and I’ll be giving you ideas below for how to customize it and make it your own.

An overhead view of a white casserole dish filled with spinach quiche.

Before anybody gets upset with me, yes, I know there is more to this recipe than spinach and feta. However, if you prefer, you can double up on the spinach and feta and use only that in this quiche recipe. I just couldn’t help but add some Mediterranean veggies. Feta cheese does that to me. So, really, this is actually a Mediterranean breakfast casserole. But let’s not worry about little things like titles. Let’s just get to the good part. The recipe.

What Is Quiche?

Quiche is originally a French dish. It’s a savory pie that uses eggs as its base. It often has a pastry-style crust that gets added, and any number of meats or veggies can find their way into this breakfast favorite. Anything from veggies to meats and cheese works great in quiche.

Quiche is typically served as a brunch food, but makes an excellent breakfast. I’ve even served it for dinner with a side salad, and it was wonderful. You can serve quiche warm or cold.

Can This Spinach Quiche Be A Crustless Quiche Recipe?

Yep! In fact, it is a crustless quiche recipe already. That said, you can use crust (and a regular pie pan) if you prefer. I just find it easier to make a crustless quiche in a casserole dish. I find they don’t stick as hard to a casserole dish as they do to a pie pan when there’s no crust involved.

A metal spatula holds a serving of spinach quiche over the casserole dish it was taken from.

Mediterranean Quiche

Yes, this is a Mediterranean quiche with Mediterranean flavors, and it’s wonderful. Again, if you prefer to stay true to the name of this recipe, you can use four cups of frozen spinach and a full cup of feta cheese crumbles to make a more normal spinach and feta quiche.

What Else Can I Add To Spinach Quiche?

Well, as you can see, there are a lot of things you can add. But I’ll give you even more ideas here. This is certainly not an exhaustive list. You can add all sorts of things to this recipe as you like. Fresh herbs are also wonderful additions here. I particularly enjoy fresh thyme.

The truth is, if you hate anything here, you can just leave it out or replace it with something else in any amount you choose. As I said, this recipe is 100% customizable, so have some fun with it. Here are some ideas:

Grated Parmesan cheese
Bacon
Zucchini
Mushrooms
Leeks
Squash (summer squash works best)
Kale
Caramelized onions
Ricotta
Chives
Fontina cheese
Cauliflower (chopped small)
Mozzarella cheese
Sausage
Shallots
Sharp cheddar cheese
Swiss cheese
Pancetta

How Can I Make My Quiche Fluffier?

If you want to make the eggs lighter and fluffier, try adding a quarter cup of any of the following to the batter:

Milk
Half and half
Heavy cream
Unsweetened oat milk
Unsweetened almond milk

A front view of a white casserole dish filled with spinach quiche.

What Pie Shell Should I Use?

You can use any standard pie crust you prefer. But if you need some easy recipes, try one of these:

Whole Wheat Pie Crust
Oat Flour Pie Crust – Gluten-free.

Recipe Tips

The larger your casserole dish is, the thinner your quiche will be. I recommend using a smaller casserole dish or a 9-inch pie pan.
Thicker quiches may require some extra baking time, while thinner quiches will require a bit less.

Can This Be Made Ahead?

Yes, it can. If you want to put the raw mix together, you can mix it 2 days ahead and keep it covered in the fridge. Then bake it when you’re ready. It will keep for 3 days after baking.

An overhead view of a piece of spinach quiche on a white plate. A fork lifts a bite of the quiche from the plate.

Spinach Quiche Ingredients

Large eggs – These can be chilled or at room temperature.

Italian seasoning – This is a blend you can buy in the spice aisle. If you don’t have it, you can make your own.

Garlic powder – Or garlic granules.

Onion powder – Or onion granules.

Red onion – Chop this fine for the best texture.

Kalamata olives – Pitted, then halved or sliced. You can also purchase them pre-sliced for convenience.

Frozen spinach – You can use double the amount if you want to use fresh spinach. But I find frozen works best here. If you use fresh, you’ll want to wilt it in a skillet with some oil first. Baby spinach leaves work best.

Cherry tomatoes – Or grape tomatoes.

Crumbled feta cheese – I buy a block and crumble it myself. You can use cow, sheep, or goat feta (or any combination it comes in. I use a combo of sheep and goat and it’s delicious.

Olive oil – Extra virgin is best.

Salt and pepper – To taste at serving

How To Make A Spinach Quiche With Feta Cheese

An oven display set to 350 degrees Fahrenheit.

Preheat your oven to 350°F.

Ten eggs cracked into a large mixing bowl.

Crack all the eggs into a large mixing bowl.

Spices added to whisked eggs in a mixing bowl.

Whisk the eggs well and add the spices. Set the bowl aside for a few minutes.

Spinach quiche additions on a cutting board.

Prep all your veggies as needed.

Quiche ingredients and additions added to the whisked eggs and spices in a mixing bowl.

All the spinach quiche ingredients whisked together in a mixing bowl with a whisk.

Add them to the egg mixture. Stir well to combine.

Oil a casserole dish.

Raw quiche ingredients poured into an oiled casserole dish for baking.

Pour the batter into the dish.

The finished spinach quiche just out of the oven.

Bake for 45 to 60 minutes. The center should be solid when it’s done.

A metal spatula starting to lift out a serving of spinach quiche.

Slice into sice portions, serve, and enjoy.

Storage

Store leftovers in the fridge, well covered, for up to three days.

Freezing

Freezing is not recommended for this recipe.

Reheating

This reheats well in a microwave, but can also be reheated in a pre-heated oven at 325 F. until warmed through. You might need to cover it loosely with foil to keep the top from burning.