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Caramelized Onion & Squash Tart

A savory tart made with flaky crust, sweet caramelized onions, roasted squash, and a creamy herb filling.
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Prep Time 20 minutes
Cook Time 1 hour
Total Time 1 hour 20 minutes
Servings: 6 slices
Course: Main, Side
Cuisine: American, French-inspired
Calories: 320
Ingredients Equipment Method Notes

Ingredients
  

  • 1 tart crust prepared
  • 3 yellow onions thinly sliced
  • 2 tbsp olive oil
  • 2 tbsp unsalted butter
  • 2 cups butternut squash thinly sliced
  • 3 eggs
  • 1 cup heavy cream
  • 1 cup Gruyère cheese grated
  • 1 tbsp fresh thyme

Equipment

  • Tart pan
  • Skillet
  • Baking sheet

Method
 

  1. Preheat oven to 375°F (190°C).
  2. Caramelize onions slowly in olive oil and butter.
  3. Roast squash until just tender.
  4. Whisk eggs, cream, thyme, salt, and pepper.
  5. Layer cheese, onions, and squash in crust.
  6. Pour egg mixture over filling.
  7. Bake until set and golden.

Notes

Let rest 10 minutes before slicing.