Easy High-Protein Spinach & Feta Crustless Quiche (Low-Carb)

Description

Indulge in a rich, savory Mediterranean breakfast that offers all the velvety satisfaction of a classic quiche without the heavy, carbohydrate-dense crust. Loaded with vibrant wilted spinach, intensely flavorful sun-dried tomatoes, and tangy crumbled feta, every slice delivers a soft, custard-like texture balanced by a lightly golden surface. It’s an effortlessly elegant dish designed to nourish your body, fuel your morning, and satisfy your cravings using wholesome, nutrient-dense ingredients.

Whether you are seeking low-carb dinner ideas or a high-protein meal prep staple, this recipe fits seamlessly into a healthy lifestyle. Packed with essential micronutrients and lean egg protein, it keeps carbohydrates remarkably low while delivering maximum Mediterranean flavor. It is proof that eating balanced, whole-food meals never requires compromising on taste or satisfaction.

Can This Spinach, Sun-Dried Tomato & Feta Crustless Quiche Support Weight Loss Goals?

Yes, this crustless quiche is an exceptional choice for supporting weight loss and body composition goals. By eliminating the high-calorie, butter-laden flour crust found in conventional quiches, the overall calorie density is significantly reduced while preserving key nutrients. Whole eggs and egg whites provide complete protein and essential healthy fats, which promote long-lasting satiety and help regulate hunger hormones throughout the day. Additionally, nutrient-dense baby spinach and sun-dried tomatoes add volume, antioxidants, and dietary fiber without introducing excess sugar or refined carbohydrates.

Does Spinach, Sun-Dried Tomato & Feta Crustless Quiche Fit a High Protein Lifestyle?

This recipe fits remarkably well into a high-protein lifestyle, providing approximately 14 grams of high-quality protein per serving with only about 3 grams of net carbs. Eggs, feta cheese, and milk work in harmony to create a dense amino acid profile that aids in muscle repair, metabolic support, and sustained energy. With zero artificial fillers and a clean macro profile, it offers maximum protein efficiency while keeping net carbs strictly in check.

My Personal Experience

• Effortless Weekly Meal Prep Efficiency

  Baking a full dish on Sunday provides four to six ready-to-eat morning meals that hold their structure beautifully throughout the entire week.

• Intense Flavor Contrast Without Extra Calories

  The combination of salty feta and sweet sun-dried tomatoes creates a bold taste profile that eliminates any need for heavy, high-sodium sauces.

• Flawless Crustless Custard Setting Every Time

  Squeezing the water out of the sautéed spinach guarantees a light, velvety slice that never turns soggy or watery at the bottom.

Perfect For:

• High-Protein Breakfasts: Kickstart your morning with clean, lasting energy without experiencing a mid-morning sugar crash.

• Low-Carb & Keto Diet Plans: Enjoy a classic comfort food adapted perfectly for keto and low-carbohydrate eating habits.

• Post-Workout Recovery: Replenish your body with essential amino acids, calcium, and sodium after an intense exercise session.

• Mid-Week Meal Prep: Portions easily into airtight glass containers for quick grab-and-go weekday lunches or light dinners.

Why You’ll Love This Recipe:

• Crust-Free & Naturally Gluten-Free

  Skipping the pastry crust slashes empty carbohydrates while making this dish naturally safe for gluten-sensitive households.

• Packed with Whole Food Mediterranean Flavors

  A vibrant pairing of spinach, garlic, feta, and sun-dried tomatoes brings rich restaurant-quality dining straight to your kitchen.

• Customizable to Any Protein Goal

  Easily boost the protein content further by stirring in cottage cheese, extra egg whites, or diced lean turkey bacon.

• Beginner-Friendly One-Pan Preparation

  Minimal active cooking time and simple kitchen steps mean anyone can master this bake on their very first attempt.

Common Mistakes to Avoid:

1. Skipping the Spinach Squeezing Step: Leaving excess water in cooked spinach results in a watery egg mixture and a soft, weeping quiche center.

2. Baking at Too High a Temperature: Baking above 375°F (190°C) causes the egg proteins to contract too quickly, making the texture rubbery instead of silky.

3. Using Oil-Drenched Tomatoes Without Draining: Failing to pat dry sun-dried tomatoes introduces excess grease that separates from the custard while baking.

4. Slicing Immediately Out of the Oven: Cutting into the dish while piping hot prevents the internal custard structure from fully setting into clean slices.

Required Equipment:

• 9-Inch Pie Dish or Springform Pan: Ensures even heat distribution and allows for effortless slicing and serving.

• Non-Stick Skillet: Perfect for quickly wilting fresh spinach and sautéing aromatics without sticking.

• Large Stainless Steel Whisk: Incorporates air into the egg-and-milk custard base for a fluffier, lighter baked texture.

• Colander or Fine-Mesh Strainer: Essential for pressing out unwanted liquid from the sautéed greens before assembly.

Storage Instructions:

• Refrigerator: Allow the cooked quiche to cool completely to room temperature. Store leftover slices in an airtight glass container for 4 to 5 days.

• Freezer: Wrap individual sliced portions tightly in parchment paper and wrap again with aluminum foil or place in freezer-safe bags for up to 2 months.

• Reheating: Warm individual refrigerated slices in the oven at 350°F (175°C) for 10–12 minutes, or heat in an air fryer at 325°F (160°C) for 4–5 minutes to maintain structure without losing protein quality.

Recipe Details

• Preparation Time: 15 Minutes

• Cooking Time: 35 Minutes

• Total Time: 50 Minutes

• Servings: 6 Servings

• Best Season for This Recipe: All-Season

• Total Calories (Per Serving): Approximately 225 kcal

Recipe Summary & Overview

This easy Spinach, Sun-Dried Tomato & Feta Crustless Quiche combines rich Mediterranean taste with exceptional low-carb nutrition. Freshly sautéed spinach, sweet sun-dried tomatoes, and salty feta are suspended in a silky egg custard baked to golden perfection. It is an ideal addition to your weekly high-protein routine that tastes indulgent while remaining clean and healthy.

📝 Ingredients:

• 1 tbsp (15 ml) Olive Oil (Note: You can use the savory oil from the sun-dried tomato jar for extra flavor)

• 1 small (70 g) Yellow Onion, finely diced

• 2 cloves Fresh Garlic, minced

• 5 oz (140 g) Fresh Baby Spinach, roughly chopped

• 6 large Whole Eggs, room temperature

• 1/2 cup (120 ml) Whole Milk or Unsweetened Almond Milk

• 1/3 cup (50 g) Sun-Dried Tomatoes in Oil, well-drained and chopped

• 4 oz (115 g) Feta Cheese, coarsely crumbled

• 1/2 cup (50 g) Shredded Mozzarella Cheese (helps bind the crustless edge)

• 1/2 tsp Kosher Salt

• 1/4 tsp Black Pepper, freshly cracked

• 1/2 tsp Dried Oregano or Italian Seasoning

Directions:

1. Preheat & Prepare Equipment:

   Preheat your oven to 375°F (190°C). Generously grease a 9-inch pie dish or quiche pan with 1/2 tablespoon of olive oil or non-stick spray, making sure to coat the sides thoroughly to prevent sticking.

2. Sauté Aromatics & Greens (Medium Heat — 5 to 7 Minutes):

   Heat the remaining olive oil in a non-stick skillet over medium heat. Add the diced yellow onion and sauté for 3 minutes until translucent. Stir in the minced garlic and chopped spinach, cooking for 2 to 3 minutes until the spinach is fully wilted.

3. Drain Excess Moisture (Crucial High-Protein Texture Tip):

   Transfer the warm spinach mixture into a fine-mesh strainer or colander. Use the back of a spoon or paper towels to squeeze out all excess liquid. High-protein tip: Removing moisture prevents egg dilution, keeping the finished quiche dense and protein-packed.

4. Whisk the Egg Custard Base:

   In a large bowl, crack all 6 eggs and add the milk, salt, black pepper, and dried oregano. Whisk vigorously for 60 seconds until the mixture is uniform, fully blended, and slightly bubbly on top.

5. Assemble Layers in the Baking Dish:

   Scatter the squeezed spinach-onion mix evenly across the bottom of the greased pie dish. Top with chopped sun-dried tomatoes, crumbled feta cheese, and half of the shredded mozzarella.

6. Pour & Bake (375°F / 190°C — 30 to 35 Minutes):

   Pour the egg mixture slowly over the layered ingredients, allowing it to settle into all crevices. Sprinkle the remaining mozzarella over the top. Bake for 30–35 minutes until the center is completely set and the edges are golden brown with a slight crisp.

7. Rest & Slice:

   Remove from the oven and let the quiche rest undisturbed for 10 minutes. The internal temperature will drop slightly, allowing the custard to firm up for clean, beautiful slicing.

Nutrition Facts (Per Serving – Approximate):

• Calories: 225 kcal

• Fats: 16 g

• Cholesterol: 205 mg

• Sodium: 490 mg

• Potassium: 280 mg

• Total Carbohydrates: 4.5 g

• Fiber: 1.2 g

• Net Carbs: 3.3 g

• Sugars: 2.1 g

• Protein: 14 g

• Calcium: 180 mg

Notes:

• Storage & Reheating: Refrigerate in an airtight container for up to 5 days or freeze slices individually. Reheat in an oven or air fryer rather than a microwave to maintain firm edges.

• Allergy Notes: Gluten-free naturally. To make it dairy-free, substitute feta and mozzarella with dairy-free plant cheeses and use unsweetened almond or oat milk.

• Flavor Boosts: Add 1/4 teaspoon of crushed red pepper flakes or a dash of fresh nutmeg to the egg mixture to accentuate the creamy spinach flavors.