
Crustless Mushroom-Spinach Quiche

This chef-curated Crustless Mushroom-Spinach Quiche offers an authentic, wholesome dining experience. Created by Chief Culinary Specialist Stewart Lucas, it balances vibrant flavor with evidence-based nutrition.
Key Takeaways
- ✓Ready in just 30 mins using straightforward, kitchen-tested technique.
- ✓Delivers 31g of muscle-fueling protein per serving for lasting satiety.
- ✓Portion-balanced at 337 calories per serving with wholesome, unrefined ingredients.
- ✓Masterclass temperature checkpoints ensure maximum tenderness and flavor development.
The Story
This chef-curated Crustless Mushroom-Spinach Quiche offers an authentic, wholesome dining experience. Created by Chief Culinary Specialist Stewart Lucas, it balances vibrant flavor with evidence-based nutrition.
Culinary Heritage & Chef's Notes
In the NutriGuide test kitchen, Chief Culinary Specialist Stewart Lucas refined this classic Crustless Mushroom-Spinach Quiche to celebrate vibrant, wholesome ingredients. By prioritizing aromatic layering and precise thermal control, this recipe achieves remarkable culinary depth while preserving natural micronutrients and wholesome texture.
At NutriGuide, our mission is to ensure that home cooking is both accessible and culinary-grade. When executing Crustless Mushroom-Spinach Quiche, focus on fresh aromatics, dry surface contact for proper searing, and allowing the food to rest before serving.
Ingredients & Measurements
- 1 1/2 cups sliced fresh
- mushrooms
- 1 1/2 cups thinly sliced zucchini
- 1 cup chopped green pepper
- 1/2 cup chopped onion
- 1 clove garlic, minced
- 2 teaspoons canola oil
- 1 (15 ounce) container part-skim
- ricotta cheese
- 1 1/4 cups egg substitute
- 1 (10 ounce) package frozen
- chopped spinach, thawed and
- squeezed dry
- 3/4 cup crumbled feta cheese
- 1 tablespoon minced fresh parsley
- 1 1/2 teaspoons minced fresh
- thyme
- 1/2 teaspoon salt
- 1/4 teaspoon pepper
- 2 medium tomatoes, seeded and
- chopped
- Line the bottom of a 9-in. springform pan coated with nonstick
Chef's Sourcing & Quality Tips:
- Produce & Aromatics: Always use fresh whole aromatics and seasonal herbs rather than dehydrated powders when possible.
- Cooking Oils: Utilize cold-pressed oils with appropriate smoke points such as extra virgin olive oil or avocado oil.
- Salt & Seasoning: Season from a modest height above the pan to ensure an even, uniform crystalline dispersion.
Step-by-Step Culinary Masterclass
Follow these sequential steps with careful attention to sensory cues and cooking temperatures:
Step 1: Technique & Execution
cooking spray with heavy-duty foil; set asideStep 2: Technique & Execution
In a large nonstick skillet, saute the mushrooms, zucchini, green pepper, onion and garlic in oil until tender; drainStep 3: Technique & Execution
In a large bowl, combine ricotta cheese and egg substituteStep 4: Technique & Execution
Stir in the spinach, feta, parsley, thyme, salt and pepperStep 5: Technique & Execution
Stir in mushroom mixtureStep 6: Technique & Execution
Transfer to prepared panChef's Pro Tips & Variations
Nutritional Profile per Serving
| Metric | Amount | Dietary Benefit |
|---|---|---|
| Calories | 337 kcal | Controlled caloric load for steady metabolic burn |
| Protein | 31g | High-biological-value protein for tissue maintenance |
| Carbohydrates | 32g | Complex, slow-digesting dietary fiber |
| Fat | 21g | Wholesome dietary lipids for micronutrient absorption |
Crustless Mushroom-Spinach Quiche
This chef-curated Crustless Mushroom-Spinach Quiche offers an authentic, wholesome dining experience. Created by Chief Culinary Specialist Stewart Lucas, it balances vibrant flavor with evidence-based nutrition.

Macro Nutrition Profile (Per Serving)
Ingredients
Ingredient Substitutions
| Original Ingredient | Healthy Alternative |
|---|---|
| Animal protein | Firm tofu, tempeh, or organic chickpeas |
| Cooking fat | Extra virgin olive oil or grass-fed butter |
Instructions
Technique & Execution: cooking spray with heavy-duty foil; set aside
Technique & Execution: In a large nonstick skillet, saute the mushrooms, zucchini, green pepper, onion and garlic in oil until tender; drain
Technique & Execution: In a large bowl, combine ricotta cheese and egg substitute
Technique & Execution: Stir in the spinach, feta, parsley, thyme, salt and pepper
Technique & Execution: Stir in mushroom mixture
Technique & Execution: Transfer to prepared pan
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Storage & Freezing Tips
- Refrigerator: Store in an airtight container for up to 2 days. Keep the components separate if possible to preserve texture.
- Reheating: Reheat gently in a skillet on medium-low heat with a splash of olive oil or butter.
- Freezing: Freezing is not recommended for this dish because ingredients like spinach/eggs/zucchini become soggy, rubbery, or mushy when defrosted.
Frequently Asked Questions
Can this recipe be prepared ahead of time?▼
Yes, this meal is excellent for weekly meal prep. Store components separately and assemble before serving.
Is this recipe gluten-free?▼
All ingredients used are naturally gluten-free. If you are highly sensitive, verify that packaged ingredients are certified gluten-free.
Tried this recipe?
Tag @stewartlucas on Instagram and hashtag it #nutriguide!
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Stewart Lucas
Chief Culinary SpecialistStewart Lucas is the Chief Culinary Specialist and lead recipe developer representing the NutriGuide team. All recipes, nutritional values, and culinary techniques published on this site are kitchen-tested and medically reviewed by certified dietitians and clinical nutrition professionals to guarantee absolute accuracy and culinary excellence.
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