Name: Keto Spinach and Feta Casserole Recipe
Prep time: 15 min
Cook time: 35 min
Total time: 50 min
Cuisine: Mediterranean
Ingredients: 4 cups fresh spinach, chopped; 1 cup crumbled feta cheese; 1/2 cup shredded mozzarella cheese; 1/4 cup grated Parmesan cheese; 4 large eggs; 1 cup heavy cream; 2 cloves garlic, minced; 1 teaspoon dried oregano; Salt to taste; Pepper to taste

There’s something so comforting about a warm, creamy casserole, and this Keto Spinach and Feta Casserole Recipe hits all the right notes. It’s delightfully cheesy, packed with vibrant spinach, and perfectly fluffy from the eggs and cream. Whether you’re craving a cozy dinner after a busy day or a make-ahead meal for a weekend brunch, you’ll find this dish feels like a hug on a plate.

A rectangular tan baking dish filled with a baked spinach and cheese casserole sits on a white marbled surface. The dish has three easy layers visible: a golden baked base at the bottom, a thick middle layer with cooked dark green spinach, and an uneven top layer sprinkled with white crumbled cheese and black pepper. The cheese looks soft and slightly creamy, scattered in small lumps across the surface. The dish has a warm, freshly baked look with slight browning along the edges, and the background shows blurry shapes of a garlic bulb and a white bowl. Photo taken with an iphone --ar 4:5 --v 7 — Keto Spinach and Feta Casserole, low-carb spinach casserole, cheesy keto casserole, healthy spinach and feta bake, keto-friendly breakfast casserole

Jump to:

Meet the Magic Behind This Dish
Why You’ll Love This
The Essentials: Ingredients That Do the Work
Step-by-Step: Bringing Keto Spinach and Feta Casserole Recipe to Life
Pro Moves to Elevate It
Switch It Up: Creative Variations
Storage & Reheating Tips
Serving Inspiration
Frequently Asked Questions
Notes & Handy Tools
Full Recipe

Meet the Magic Behind This Dish

What inspired this Keto Spinach and Feta Casserole Recipe was my love for simple, low-carb dishes that don’t sacrifice flavor. It’s unique because it balances the tangy saltiness of feta with the earthy freshness of spinach and the rich creaminess that only a good heavy cream and eggs combo can deliver. When it bakes, the golden crust forms on top while the inside stays tender and lush—trust me, that contrast is what defines this casserole.

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Why You’ll Love This

This casserole is a blend of creamy richness and bright veggie vibes that make every bite surprisingly satisfying. It’s so simple it will become your go-to keto comfort meal.

Texture That Melts: Silky custard-like interior with a toasty golden top.
Flavor Layers You’ll Crave: Tangy feta, garlicky herbs, and melty mozzarella.
Quick to Master: Minimal prep and effortless to mix and bake.
Perfect Anytime Meal: Breakfast, lunch, dinner, or even a snack — it works.

The Essentials: Ingredients That Do the Work

Keto Spinach and Feta Casserole Recipe - Recipe Image — Keto Spinach and Feta Casserole, low-carb spinach casserole, cheesy keto casserole, healthy spinach and feta bake, keto-friendly breakfast casserole

Choosing the right ingredients is key to nailing this Keto Spinach and Feta Casserole Recipe. I always opt for fresh spinach when I can because it really brightens the dish, but frozen works just fine if you’re pressed for time—just make sure to drain it well. The cheeses are your flavor power players, so pick quality feta for its signature tang and a good mozzarella to get that gooey finish.

Fresh Spinach: Adds vibrant color and a mild earthiness; feel free to wilt it beforehand if you prefer softer textures.
Crumbled Feta Cheese: Brings a salty, creamy punch that defines the casserole’s flavor.

Quick Note: Precise amounts and timing live in the recipe card at the end.

Step-by-Step: Bringing Keto Spinach and Feta Casserole Recipe to Life

Step 1 — Gather, Chop, and Prep

Start by getting everything ready in one spot—the mixing bowl, whisk, and your baking dish. Chop your fresh spinach roughly; if you’re using frozen, squeeze out any extra water so your casserole stays creamy, not watery. Mince the garlic finely—you want little bursts of flavor without overwhelming bites. This prep rhythm sets a nice pace, and you’ll notice the colors and aromas come alive before cooking even starts.

Step 2 — Heat, Stir, and Build Flavor

While this casserole doesn’t require stovetop cooking, whisking the eggs with heavy cream, garlic, oregano, salt, and pepper really awakens the flavors. As you stir in spinach, feta, and half the mozzarella, you’ll see the mix turn into a creamy, inviting batter. Pour it into the greased dish—this is where the magic begins. Once in the oven, keep an eye for that golden top forming, and breathe in the cozy aroma filling your kitchen.

Step 3 — Finish and Taste-Test

After baking for about 30-35 minutes, it’s time for that satisfying moment: the casserole should look set and have a beautiful golden crust. Let it cool just a bit so it firms up and slices neatly. When you taste it, pay attention to the creamy custard texture contrasted by the sharper cheeses—you’ll love how balanced it all is. It’s the kind of dish that feels indulgent but keeps you on track keto-wise.

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Pro Moves to Elevate It

Once you’ve made this Keto Spinach and Feta Casserole Recipe a time or two, you’ll find some easy ways to take it up a notch for even more flavor and convenience.

Heat Wisdom: Use medium heat in your oven to ensure the eggs set properly without overbrowning the cheese on top.
Timing Trick: Start checking for doneness around 25 minutes—ovens vary, and you want a custard-like center, not dry.
Make-Ahead Strategy: Prep the mixture the night before, cover tightly, and bake fresh for a stress-free meal.
Common Slip-Up: Don’t forget to drain spinach well—too much moisture makes a soggy casserole.

Switch It Up: Creative Variations

One of the best things about this Keto Spinach and Feta Casserole Recipe is how versatile it is to personalize. You can play with different cheeses, herbs, or add-ins that suit your mood or pantry supplies. This flexibility keeps the dish feeling fresh every time you make it.

When You’re Feeling Bold

Try adding a little smoked paprika for a subtle smoky kick or fold in cooked sausage or crispy bacon for extra protein and texture. Swap mozzarella for aged cheddar or sprinkle fresh chopped dill on top after baking. These small tweaks make it your signature casserole with personality.

Storage & Reheating Tips

This casserole keeps wonderfully in the fridge for up to 4 days, wrapped well or in an airtight container. Freeze portions individually in freezer-safe containers for up to 2 months. To reheat, thaw overnight in the fridge if frozen, then warm in the oven at 325°F until heated through—this helps keep the texture creamy rather than rubbery like the microwave sometimes does.

Serving Inspiration

I love pairing this casserole with a fresh green salad and a simple lemon vinaigrette for a light lunch. On cozy nights, serve alongside roasted cherry tomatoes or garlic butter mushrooms for a richer plate. A crisp white wine or even sparkling water with lemon rounds out the meal beautifully, whether you’re dining solo or entertaining friends.

Frequently Asked Questions

Can I use frozen spinach instead of fresh?

Absolutely! Just make sure it’s fully thawed and squeezed of excess liquid to keep the casserole from becoming watery.

Can I make this casserole ahead of time?

Yes, prepping the mixture and storing it covered in the fridge works well. Just bake it fresh before serving for best texture and flavor.

Is this recipe suitable for a strict keto diet?

Definitely! With low-carb greens and rich cheeses, it fits perfectly into most keto meal plans.

What’s the best way to reheat leftovers?

Warm leftovers gently in the oven at 325°F until heated through to maintain that creamy texture, rather than microwaving, which can dry it out.

Notes & Handy Tools

A 9×9-inch baking dish is ideal for even cooking and a nice crust. A good whisk helps create that airy custard texture when you mix eggs and cream. Also, a silicone spatula makes folding in the ingredients gentle and easy, preserving the lightness you want. Finally, a reliable oven thermometer can ensure your oven is right on target—especially useful for egg-based bakes like this one.

Full Recipe