Provençal-Style French Onion Soup with Gruyère

By AislePrompt Editorial · ·

How this recipe was made — this recipe was drafted by AislePrompt's AI-assisted pipeline from technique templates and USDA-sourced nutrition data, and published by AislePrompt Editorial — see how AislePrompt recipes are developed and reviewed.

Slow-simmered onions in rich beef broth, crowned with a golden cheese crust, capturing the soul of French home cooking. This French-inspired soup recipe, ready in about 85 minutes, pairs Yellow onions, Butter, Beef broth for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 280 calories and feeds 6, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 20 min Cook: 65 min Serves 6 French cuisine 280 cal/serving
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Ingredients

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Instructions

  1. Step 1: In a large Dutch oven, melt 3 tbsp butter over medium heat; add 6 cups thinly sliced yellow onions and cook for 30-35 minutes, stirring every 5 minutes, until deeply golden and caramelized.
  2. Step 2: Add 4 cups beef broth, 1 sprig thyme, 1/2 tsp salt, and 1/4 tsp black pepper, then bring to a gentle simmer and cook uncovered for 20 minutes to meld flavors.
  3. Step 3: Preheat the oven to 375°F (190°C); place 8 baguette slices on a baking sheet and toast for 5 minutes until crisp.
  4. Step 4: Ladle the soup into oven-safe bowls, top each with 1/2 cup grated Gruyère cheese, then place under the broiler for 2-3 minutes until the cheese is bubbling and golden.

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