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Caramelized Onion And Portabella Mushroom Soup
Creole Food AndDinnerHealthy Eating

Caramelized Onion And Portabella Mushroom Soup

Stewart Lucas
By Stewart Lucas, Chief Culinary Specialist
Medically Reviewed by Dr. Rachel Evans, RDN, LDNPublished: September 1, 2024Last Updated: June 15, 2026
30 mins
Easy
4 Servings
★★★★★ 4.9 (34 reviews)
Quick Summary Answer
⏱️ 4 min read read📅 Updated: June 15, 2026

This chef-curated Caramelized Onion And Portabella Mushroom Soup 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 27g of muscle-fueling protein per serving for lasting satiety.
  • ✓Portion-balanced at 422 calories per serving with wholesome, unrefined ingredients.
  • ✓Masterclass temperature checkpoints ensure maximum tenderness and flavor development.

The Story

This chef-curated Caramelized Onion And Portabella Mushroom Soup 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 Caramelized Onion And Portabella Mushroom Soup 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 Caramelized Onion And Portabella Mushroom Soup, focus on fresh aromatics, dry surface contact for proper searing, and allowing the food to rest before serving.

Ingredients & Measurements

  • WITH GOAT CHEESE CROUTONS
  • Prep Time: 2½ Hours
  • Yields: 6 Servings
  • Comment:

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

Eating this soup, it would be easy to imagine yourself at an outdoor bistro in Paris, yet it works just as well as a post-parade pick-me-up on Bourbon Street

Step 2: Technique & Execution

Ingredients for Soup: 1½ pounds onions, halved and thinly sliced (about 5 cups) 1½ pounds portabella mushrooms, stemmed, halved and cut into ¼- inch strips 4 tbsps butter 4 sprigs thyme 1 tbsp sugar 3 tbsps Cognac or brandy ¼ cup minced garlic 4 cups beef broth 4 cups vegetable broth ¼ cup sherry salt and cracked black pepper to taste Method: In a large, heavy-bottomed soup pot, melt 1 tablespoon butter over high heat

Step 3: Technique & Execution

Sauté onions, thyme and sugar 10 minutes or until onions begin to soften

Step 4: Technique & Execution

Reduce to low; cook 20 minutes or until onions are caramelized, stirring occasionally

Step 5: Technique & Execution

Transfer onion mixture to a medium bowl and set aside

Step 6: Technique & Execution

Melt remaining butter in same pot over medium-high heat

Chef's Pro Tips & Variations

Nutritional Profile per Serving

MetricAmountDietary Benefit
Calories422 kcalControlled caloric load for steady metabolic burn
Protein27gHigh-biological-value protein for tissue maintenance
Carbohydrates34gComplex, slow-digesting dietary fiber
Fat21gWholesome dietary lipids for micronutrient absorption

Caramelized Onion And Portabella Mushroom Soup

This chef-curated Caramelized Onion And Portabella Mushroom Soup offers an authentic, wholesome dining experience. Created by Chief Culinary Specialist Stewart Lucas, it balances vibrant flavor with evidence-based nutrition.

★★★★★4.9 from 34 votes
Caramelized Onion And Portabella Mushroom Soup
CourseDinner
Prep Time20 mins
Cook Time30 mins
Total Time50 mins
Servings4
AuthorStewart Lucas

Macro Nutrition Profile (Per Serving)

Calories21% DV
422 kcal
Protein54% DV
27g
Fat27% DV
21g
Carbs12% DV
34g
Scale Ingredients

Ingredients

Comment

Ingredient Substitutions

Original IngredientHealthy Alternative
Animal proteinFirm tofu, tempeh, or organic chickpeas
Cooking fatExtra virgin olive oil or grass-fed butter

Instructions

1

Technique & Execution: Eating this soup, it would be easy to imagine yourself at an outdoor bistro in Paris, yet it works just as well as a post-parade pick-me-up on Bourbon Street

2

Technique & Execution: Ingredients for Soup: 1½ pounds onions, halved and thinly sliced (about 5 cups) 1½ pounds portabella mushrooms, stemmed, halved and cut into ¼- inch strips 4 tbsps butter 4 sprigs thyme 1 tbsp sugar 3 tbsps Cognac or brandy ¼ cup minced garlic 4 cups beef broth 4 cups vegetable broth ¼ cup sherry salt and cracked black pepper to taste Method: In a large, heavy-bottomed soup pot, melt 1 tablespoon butter over high heat

3

Technique & Execution: Sauté onions, thyme and sugar 10 minutes or until onions begin to soften

10:00
4

Technique & Execution: Reduce to low; cook 20 minutes or until onions are caramelized, stirring occasionally

20:00
5

Technique & Execution: Transfer onion mixture to a medium bowl and set aside

6

Technique & Execution: Melt remaining butter in same pot over medium-high heat

Tried this recipe?

Let us know how it turned out! Click a star below to leave a review and rate the recipe.

Storage & Freezing Tips

  • Refrigerator: Store leftovers in an airtight container for up to 3-4 days.
  • Reheating: Heat in a saucepan or skillet on medium heat until hot throughout.
  • Freezing: Freeze portions in airtight containers for up to 2 months. Reheat directly from frozen or after thawing.

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

Stewart Lucas

Chief Culinary Specialist

Stewart 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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