French Onion and Bean Soup with Mexican Chiles

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A classic French onion soup enriched with Mexican chiles for a spicy, smoky depth and a touch of heat. This french-inspired soups ready in about 70 minutes pairs onion, beef broth, white beans for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 350 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.

★ 3.7 (14 ratings) Prep: 30 min Cook: 40 min Serves 4 French cuisine 350 cal/serving
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Ingredients

Instructions

  1. Step 1: Thinly slice 4 onions using a mandoline or sharp knife, then place them in a large Dutch oven with 2 tbsp olive oil. Cook over medium-low heat, stirring occasionally, for 20-25 minutes until they turn deep amber-brown and release a sweet, caramelized aroma. Tip: Avoid stirring too frequently in the first 10 minutes to allow the onions to develop color without burning.
  2. Step 2: Add 4 cups beef broth, 200g white beans (rinsed and drained), and 2 chiles (roasted, peeled, and seeded for milder heat or left whole for smokier flavor). Bring to a gentle boil, then reduce heat to low, cover, and simmer for 30 minutes until the beans are tender and the soup thickens slightly. Tip: Skim any foam that rises to the surface during boiling for a clearer broth.
  3. Step 3: Meanwhile, toast 4 slices French bread under a broiler or in a toaster until golden and crisp, about 3-4 minutes. Set aside.
  4. Step 4: Ladle the soup into 4 bowls, then top each with a toasted bread slice and 25g grated Gruyère cheese. Broil the bowls under the oven’s broiler for 3-4 minutes until the cheese is golden-brown, bubbly, and slightly caramelized at the edges. Tip: For a richer flavor, stir 1 tbsp heavy cream into the soup before adding the bread and cheese.

Equipment for this recipe

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Frequently asked questions

How long does French Onion and Bean Soup with Mexican Chiles take to make?

Total time is about 70 minutes (30 min prep + 40 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 French Onion and Bean Soup with Mexican Chiles?

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 onion from drying out.

Can I substitute ingredients in French Onion and Bean Soup with Mexican Chiles?

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 French Onion and Bean Soup with Mexican Chiles 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 French Onion and Bean Soup with Mexican Chiles?

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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