Golden Caramelized Onion Soup

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A deeply aromatic soup where onions caramelize to a golden hue, mimicking sunlight, with a velvety texture and herb garnish. This french-inspired soups ready in about 85 minutes pairs large yellow onions, butter, all-purpose flour for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 360 calories and feeds 4, 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: 15 min Cook: 70 min Serves 4 French cuisine 360 cal/serving
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Ingredients

Instructions

  1. Step 1: Finely slice 4 large yellow onions. Melt 3 tbsp butter in a heavy pot over medium-low heat. Add onions and 1/4 tsp salt, stirring constantly, and cook for 45 minutes until deeply golden and caramelized, scraping the pot occasionally to prevent sticking.
  2. Step 2: Stir in 2 tbsp all-purpose flour and cook for 2 minutes until bubbly. Gradually whisk in 4 cups chicken stock, bringing to a gentle simmer. Add 2 tsp chopped thyme, 1/4 tsp black pepper, and 1/4 tsp paprika, then simmer uncovered for 20 minutes to meld flavors.
  3. Step 3: Remove from heat. Stir in 1/2 cup heavy cream and 1 tsp lemon zest until smooth. Season with salt to taste. Ladle into bowls, garnish with 2 tbsp chopped chives, and serve with crusty bread.

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Frequently asked questions

How long does Golden Caramelized Onion Soup take to make?

Total time is about 85 minutes (15 min prep + 70 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Golden Caramelized Onion Soup?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep large yellow onions from drying out.

Can I substitute ingredients in Golden Caramelized Onion Soup?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Golden Caramelized Onion Soup for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Golden Caramelized Onion Soup?

French soups like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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