L'Hôpital's French Onion Soup
A rich, aromatic soup with caramelized onions, beef broth, and a creamy cheese top, inspired by the mathematical legacy of l'Hôpital. This french-inspired soups ready in about 120 minutes pairs large, sliced onion, butter, small, minced shallot for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 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.
Ingredients
- 4 large, sliced onion
- 2 tbsp butter
- 1 small, minced shallot
- 1 tsp caraway seeds
- 4 cups beef broth
- 1/2 cup white wine
- 1/2 tsp thyme
- 1/2 cup crème fraîche
- 1/2 cup grated Parmesan
Instructions
- Step 1: In a large pot, melt 1 tbsp butter over medium heat. Add 3 tbsp onions and sauté for 10 minutes until golden, stirring frequently.
- Step 2: Add 1 tbsp butter, 1/2 cup shallot, and 1 tsp caraway seeds. Sauté for 3 minutes until fragrant.
- Step 3: Pour in 4 cups beef broth and 1/2 cup white wine. Bring to a boil, then reduce heat and simmer for 1 hour.
- Step 4: Stir in 1/2 tsp thyme and 1/2 cup crème fraîche. Cook for 5 minutes until the sauce thickens.
- Step 5: Ladle into bowls, top with 1/4 cup Parmesan, and garnish with fresh thyme.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does L'Hôpital's French Onion Soup take to make?
Total time is about 120 minutes (30 min prep + 90 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 L'Hôpital's French 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, sliced onion from drying out.
Can I substitute ingredients in L'Hôpital's French 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 L'Hôpital's French 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 L'Hôpital's French 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.
What others are saying
- ★★★★★
The aroma while cooking this was absolutely heavenly.
- ★★★★☆
Reliable weeknight option. Not going to blow your mind but always satisfying.
- ★★☆☆☆
Didn't come together the way I expected. Flavors were flat.
