French Onion Soup from 1651
French Onion Soup from 1651 is a medium French recipe that serves 4. 260 calories per serving. Recipe by Tasting History with Max Miller on YouTube.
Prep: 15 min | Cook: 1 hr 5 min | Total: 1 hr 35 min
Cost: $6.25 total, $1.56 per serving
Ingredients
- 6 large Yellow Onions (thinly sliced)
- 4 tablespoons Unsalted Butter (cut into pieces, room temperature)
- 2 tablespoons All-Purpose Flour (optional, for slight thickening)
- 4 cups Whole Milk (preferably 2% or whole for richness)
- 2 sprigs Fresh Thyme (leaves stripped, plus extra for garnish)
- 1 leaf Bay Leaf (whole)
- 1 teaspoon Salt (adjust to taste)
- ½ teaspoon Black Pepper (freshly ground)
- 4 slices Baguette (about 1‑inch thick, toasted)
- 1 teaspoon Olive Oil (for brushing baguette before toasting)
Instructions
Slice the onions
Peel the onions and slice them thinly (about 1‑mm thick) using a chef’s knife on a cutting board.
Time: PT5M
Caramelize the onions
Melt the butter in the heavy‑bottomed pot over medium‑low heat. Add the sliced onions, stir to coat, and cook slowly, stirring occasionally, for about 45 minutes until they turn a deep, uniform brown and are sweet‑aromatic.
Time: PT45M
Temperature: Low heat
Optional thickening
Sprinkle the flour over the caramelized onions, stir well, and cook for 2 minutes to remove raw flour taste.
Time: PT2M
Temperature: Low heat
Add milk and aromatics
Pour the milk into the pot, add thyme leaves and the bay leaf, and increase heat to medium. Bring to a gentle simmer, stirring frequently to prevent the milk from scorching, and cook for 20 minutes until the soup thickens slightly and the flavors meld.
Time: PT20M
Temperature: Medium heat
Season the soup
Remove the bay leaf, then season the soup with salt and freshly ground black pepper to taste.
Time: PT2M
Toast the baguette
Preheat the oven to 350°F (180°C). Brush each baguette slice lightly with olive oil, place on a baking sheet, and toast for 8‑10 minutes until golden and crisp.
Time: PT10M
Temperature: 350°F
Assemble and serve
Place one toasted baguette slice at the bottom of each oven‑safe soup bowl. Ladle the hot milk‑based onion soup over the bread, allowing it to soak slightly. Garnish with extra thyme leaves if desired and serve immediately.
Time: PT5M
Nutrition Facts
- Calories
- 260
- Protein
- 8 g
- Carbohydrates
- 30 g
- Fat
- 10 g
- Fiber
- 3 g
Dietary info: Vegetarian
Allergens: Dairy, Gluten
Last updated: April 7, 2026






