Recipe Image
photograph of a bowl of french onion soup on a plate with two onions next to it

French Onion Soup

Recipe Type

Who wouldn't love this version of a classic soup?



  • l pound yellow onions, sliced ¼-inch into half circles
  • 2 tablespoons unsalted butter
  • ½ tablespoons all-purpose flour
  • ¼ cup apple cider.
  • 3 cups beef stock
  • Pinch dried thyme
  • Salt and freshly ground black pepper to taste
  • Small French baguette, sliced crosswise into 1/2-inch pieces
  • 4 ounces Swiss cheese, grated on the large holes of a box grater


Melt butter in a heavy pot on medium-low heat. Add onions. Spread them out in as thin a layer as possible. Cook, stirring occasionally, until the onions are golden brown, beginning to caramelize, about 1 hour. Sprinkle flour over onions, and stir to coat. Add cider, stock, and thyme, and bring to a simmer. Cook, partially covered, for about 30 minutes, to allow the flavors to combine. Season with salt and pepper to taste. Ladle soup into oven-safe serving bowls and place one slice of bread on top of each. Layer each slice of bread with ¼ cup grated cheese. Place bowls on a cookie sheet and broil in the preheated oven until cheese bubbles and browns slightly.

Dietary and Nutrition


Onions are a low-calorie food that provides flavor in many recipes. Studies show that the phytochemicals in onions may protect against certain types of cancers.

One medium onion (2½ inches in diameter) has 44 calories, 0 grams (g) fat, 1 g protein, 10 g carbohydrate, 2 g fiber and 4 g sodium. Onions provide vitamin C and minerals including phosphorus and potassium.

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Field to Fork Onions! (FN1794, Reviewed Jan. 2020)

Many types of onions are available to grow and use. Onions are ranked sixth among the world’s leading vegetable crops. On average, people eat about 20 pounds of onions a year.

VARY YOUR VEGGIES: Why Eat Vegetables? (FN1452, Reviewed April 2020)

Vegetables are versatile, nutritious, colorful and flavorful. Not only are they naturally low in calories, fat and sodium, but they also are good sources of important vitamins, minerals and dietary fiber.

This recipe was analyzed for nutrition using Food Processor SQL Nutrition and Fitness Software and tested in the kitchen.