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French Onion Toasts

French Onion Toasts

A recipe for French Onion Toasts from the Simply Vegetarian Cookbook! Toasted slices of ciabatta bread are topped with a caramelized onion mixture and shredded Gruyère cheese.
Course Appetizer
Cuisine N/A
Keyword appetizer, bread, cheese, French onion, gruyere, toast, vegetable
Prep Time 15 minutes
Cook Time 55 minutes
Total Time 1 hour 10 minutes
Servings 4 Servings


  • 2 tablespoons olive oil
  • 2 pounds yellow onions thinly sliced lengthwise
  • 2 teaspoons dried thyme
  • 1 teaspoon kosher salt
  • 1 cup Better than Bouillon no Beef Base or vegetable broth
  • 1 tablespoon dry sherry
  • 4 slices crusty bread such as ciabatta
  • 1 cup grated Gruyère cheese


  • Heat the oil in a large skillet over medium-high heat until it shimmers. Add in the onion slices, thyme, and salt. Use tongs to toss and coat the onions with the oil. Evenly spread the onions across the skillet and reduce the heat to medium-low.
  • Cook for 45 minutes, moving the onions only every 10 to 15 minutes in the beginning and then every few minutes over the last 10 minutes. To caramelize, the onions need direct contact with the hot skillet, but left too long, they’ll burn. Use a metal spatula during the final 15 minutes to assist in moving and tossing the onions.
  • Add the broth and sherry to the skillet and scrape up any cooked onion bits from the bottom of the pan. Simmer for 10 minutes.
  • Toast the bread, then place each slice in a shallow bowl. Ladle the onions and a little broth over the bread and top with cheese.