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Savory Caramelized Onion and Gruyère Tart Recipe

Caramelized Onion and Gruyère Tart made approachable with clear cues, pantry staples, and flexible swaps.
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Ingredients Method

Ingredients
  

  • 1 pre-made tart shell 9-inch
  • 4 large yellow onions thinly sliced
  • 2 tablespoons olive oil
  • 2 tablespoons unsalted butter
  • 1 teaspoon fresh thyme leaves
  • 1 cup heavy cream
  • 3 large eggs
  • 1 cup Gruyère cheese grated
  • Salt and black pepper to taste

Method
 

  1. Preheat oven to 375°F (190°C).
  2. Cook the onions.
  3. Season the onions.
  4. Prepare the egg mixture.
  5. Combine onion mixture with egg mixture.
  6. Assemble the tart.
  7. Bake the tart.
  8. Let it cool before serving.