Easy Keto Spinach Frittata with Feta Cheese (Oven-Baked Breakfast)

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If you want a low-carb breakfast that feels cozy, satisfying, and totally doable on a busy morning, this Easy Keto Frittata Recipe with Spinach and Cheese will become a new staple. You whisk simple ingredients in one bowl, cook everything in a single oven‑safe skillet, and let the oven finish the work while you pour your coffee. It’s a great option for frittata recipes breakfast lovers, but it also doubles as one of those egg dishes for dinner that saves you when you don’t know what to cook. Plus, it’s naturally gluten-free and packed with protein and veggies, all while staying keto-friendly.

With tender spinach, creamy feta, and hints of garlic and green onion, this frittata is flavorful without being fussy. You can bake it in your favorite cast‑iron pan, a nonstick skillet, or even a small oven‑safe casserole dish if that’s what you have on hand. It’s also a great “clean out the fridge” recipe: swap spinach for your favorite low-carb veggies, add leftover bacon for a bacon frittata twist, or lighten things up with more egg whites inspired by egg white frittata recipes.

Table of Contents

Why You’ll Love This Keto Spinach Frittata

• Low-carb and keto‑friendly, perfect for busy mornings or easy dinners.
• One-pan method: cook, bake, and serve in the same oven-safe skillet.
• Versatile base: use it to inspire mini frittata recipes or other frittata recipes breakfast ideas.
• Make-ahead friendly: bake once, slice, and reheat for quick meals.
• Great for using up spinach, leftover cheese, or herbs.

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Kitchen Equipment You’ll Need

Below are some helpful tools for making this frittata smoothly. These links are affiliate links at no extra cost to you.

• Oven-safe skillet or cast‑iron pan – You can bake directly in your pan in a preheated oven. Consider using a sturdy skillet alongside your main oven for even cooking.
• Mixing bowls – You’ll whisk the eggs, cream, and seasonings in a medium bowl. Sturdy mixing bowls make prep easier.
• Measuring cups and spoons – To keep the cream, salt, and spices consistent every time, grab a measuring cups and spoons set.
• Cutting board – Use a reliable cutting board for chopping spinach and mincing garlic.
• Chef’s knife – A sharp chef’s knives set helps you quickly prep green onion, garlic, and spinach.
• Basic kitchen utensils – A heat‑safe spatula or spoon from a kitchen utensils set is ideal for sautéing and stirring.
• Weight kitchen scale – If you like to track macros precisely, a weight kitchen scale can help you portion servings.

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Ingredient List

Here’s everything you need to make this Easy Keto Frittata Recipe with Spinach and Cheese.

Ingredients Table

Ingredient	Amount	Notes
Eggs	8 whole	Large eggs
Heavy whipping cream	1/4 cup	Adds richness and fluffiness
Green onion, minced	2 tablespoons	Fresh flavor and mild onion taste
Dried thyme	1 teaspoon	Earthy seasoning
Salt	1/2 teaspoon	Adjust to taste
Ground black pepper	1/4 teaspoon	Freshly ground if possible
Butter	1 tablespoon (+ extra if needed)	For sautéing and greasing skillet
Garlic, minced	2 cloves	Sautéed for flavor
Spinach, chopped	2 cups	Fresh, loosely packed
Feta cheese, crumbled	1 1/2 cups	Adds tangy, salty creaminess

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Step-by-Step Instructions

Step 1 – Preheat the Oven

1. Preheat your oven to 350°F (177°C).
2. Make sure your oven rack is in the center position for even baking.

Step 2 – Prepare the Egg Mixture

1. In a medium mixing bowl, whisk together the 8 eggs and 1/4 cup heavy whipping cream until smooth and well combined.
2. Stir in the minced green onion.
3. Season the mixture with dried thyme, salt, and ground black pepper.
4. Whisk again briefly so the seasonings are evenly distributed.

Step 3 – Sauté the Garlic and Spinach

1. Place an oven-safe skillet over medium heat on the stovetop.
2. Add 1 tablespoon butter and let it melt, coating the pan.
3. Add the minced garlic and sauté for about 1 minute, just until fragrant, being careful not to burn it.
4. Add the chopped spinach to the pan and stir until it begins to wilt and reduce in volume.
5. Remove the skillet from heat and let the spinach cool slightly.

Step 4 – Combine Eggs, Spinach, and Feta

1. Transfer the sautéed spinach and garlic to the bowl with the egg mixture.
2. Crumble the feta cheese directly into the bowl with your hands.
3. Gently stir until the spinach and feta are evenly distributed throughout the eggs.

Step 5 – Pour and Bake

1. If needed, wipe out the skillet and add a little more butter so nothing sticks.
2. Pour the egg, spinach, and feta mixture back into the oven-safe skillet.
3. Use a fork or spatula to move the spinach around so it’s spread evenly throughout.
4. Transfer the skillet to the preheated oven.
5. Bake for 15–20 minutes, or until the top is lightly golden, the edges are set, and the center no longer jiggles when you gently shake the pan.

Step 6 – Rest and Serve

1. Remove the skillet from the oven and let the frittata rest for a few minutes.
2. Slice into wedges and serve warm.
3. Pair with a simple green salad or roasted veggies for a complete low-carb meal.

Tips, Variations, and Serving Ideas

• Make it a bacon frittata: Cook chopped bacon in the skillet first, then use the rendered fat plus a little butter to sauté the garlic and spinach.
• Try mini frittata recipes: Pour the mixture into greased muffin tins and bake at the same temperature, checking around 12–15 minutes.
• Explore egg dishes for dinner: Serve this frittata with roasted potatoes or a side of low‑carb veggies for a cozy night meal.
• Create a veggie frittata: Add mushrooms, bell peppers, or zucchini (lightly sautéed and drained) to keep it colorful and still keto‑friendly.
• Use up leftovers: Extra slices store well in the fridge and reheat nicely in the oven or air fryer.

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Equipment List Section (with Affiliate Links)

Here is a helpful equipment list for making and serving this frittata:

• Oven – Essential for baking the frittata to a golden, fluffy finish.
• Mixing bowls – Ideal for whisking eggs and combining ingredients.
• Measuring cups and spoons set – For accurate recipe measurements every time.
• Cutting board – Perfect surface for chopping spinach, garlic, and onion.
• Chef’s knives – Sharp blades for clean, easy prep work.
• Kitchen utensils – Use a heat‑safe spatula to stir and spread the spinach.
• Weight kitchen – Helpful for portioning and tracking macros.

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FAQ – Easy Keto Frittata Recipe with Spinach and Cheese

Can I make this frittata ahead of time?
Yes, you can bake this frittata, let it cool, and store it in the fridge for up to 3–4 days. Reheat slices in the oven or a hot skillet.

Can I use a different cheese instead of feta?
Absolutely. Goat cheese, shredded cheddar, or a blend of cheeses all work well, though they will slightly change the flavor profile.

Can I make this into mini frittatas?
Yes, pour the mixture into greased muffin tins and bake until set. Mini frittata recipes are great for grab‑and‑go breakfasts.

Is this recipe suitable for keto and low-carb diets?
Yes, this Easy Keto Frittata Recipe with Spinach and Cheese is naturally low in carbs and high in protein and fat, making it a great keto option.

Can I freeze leftover frittata?
You can freeze individual slices wrapped tightly. Reheat in the oven until warmed through.

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