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French Onion Crostini

Prep Time5 mins
Cook Time30 mins
Total Time35 mins
Course: Appies & Snacks
Author: Pam - For the Love of Cooking / Original by Epicurious


  • 6-8 slices of baguette
  • 1 tbsp butter
  • 1 tsp olive oil
  • 1 onion sliced thinly
  • 1 clove of garlic slightly crushed
  • 1 bay leaf
  • 1 sprig of fresh thyme
  • 2 tbsp dry white wine
  • Sea salt and freshly cracked pepper to taste
  • Gruyere cheese shredded


  • Preheat oven to 375 degrees with the rack in middle.
  • Arrange slices on a large baking sheet and bake in oven until golden, about 8 minutes. Let cool.
  • Meanwhile, heat the butter and olive oil in a heavy skillet over medium heat until butter is melted, add onion, garlic clove, bay leaf, and thyme, and cook covered, stirring occasionally, for 10 minutes.
  • Uncover skillet and cook, stirring occasionally, until deep golden, about 10 to 15 minutes more. Side Note: If the onions get dry and start to burn, add a few tablespoons of beef broth or water.
  • Add wine and cook until entirely evaporated, 1 to 2 minutes.
  • Discard garlic clove, bay leaf, and thyme.
  • Remove from the heat then season with sea salt and freshly cracked pepper, to taste.
  • Preheat the broiler and move a rack 3 to 4 inches from the top.
  • Arrange crostini on a large baking sheet, then top each with some of the caramelized onions and sprinkle generously with shredded Gruyere.
  • Place into the oven and broil until cheese is melted and gooey, 1 to 2 minutes (watch carefully). Top with a bit of fresh thyme. Enjoy!