Jul 13 2026
Restaurants›Martha's Exchange Restaurant & Brewery›French Onion Soup Recipe

French Onion Soup Recipe

Inspired by Martha's Exchange Restaurant & Brewery
Time1h 15m
Serves4

Provolone & Swiss Cheese Melted over House Made Crostini with Caramelized Onions & Beef Broth.

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Ingredients

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Crostini

Caramelized Onions

Soup Base

Cheese Topping

Method

Crostini

  1. 1

    Prepare the Crostini

    Preheat the oven to 400°F (200°C). Slice the baguette into 1/2 inch thick slices. Place the slices on a baking sheet and brush both sides with olive oil. Bake for about 10-12 minutes, turning halfway through, until golden brown and crispy.

Caramelized Onions

  1. 2

    Caramelize the Onions

    In a large skillet, melt the butter over medium heat. Add the sliced yellow onions and sprinkle with salt and sugar. Cook the onions slowly, stirring frequently, for about 30-40 minutes until they are deeply golden and caramelized.

Soup Base

  1. 3

    Prepare the Soup Base

    In a large pot, combine the caramelized onions and beef broth. Add thyme, bay leaf, and black pepper. Bring the mixture to a simmer over medium heat and let it cook for 20-25 minutes to allow the flavors to meld together.

Cheese Topping

  1. 4

    Melt the Cheese

    Ladle the hot soup into oven-safe bowls and place a generous amount of provolone and Swiss cheese on top of each. Place the bowls under the broiler for 2-3 minutes until the cheese is bubbly and golden brown.

Serve

  1. 5

    Serve the Soup

    Remove the bowls from the oven with caution, and serve hot with the crostini on the side.

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