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Caramelized Onion & Squash Tart

A savory tart made with deeply caramelized onions, tender roasted squash, creamy cheese, and a flaky crust.
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Prep Time 25 minutes
Cook Time 45 minutes
Total Time 1 hour 10 minutes
Course Dessert, Snack
Cuisine American, Autumn
Servings 6 slices
Calories 320 kcal

Equipment

  • Mixing bowls
  • Baking sheet
  • Skillet
  • Tart pan

Ingredients
  

Tart Base

  • 1 prepared tart shell 9-inch

Filling

  • 2 tbsp olive oil
  • 2 yellow onions thinly sliced
  • 2 cups squash thinly sliced
  • 2 eggs large
  • 0.75 cup heavy cream
  • 1 cup Gruyère cheese grated
  • 1 tbsp fresh thyme

Instructions
 

  • Preheat oven to 375°F (190°C). Chill tart shell in pan.
  • Slowly caramelize onions in olive oil over medium-low heat until golden.
  • Roast squash slices until just tender.
  • Whisk eggs, cream, cheese, and thyme together.
  • Layer onions and squash in tart shell and pour filling over.
  • Bake until set and lightly golden.

Notes

Let rest before slicing for clean cuts.
Keyword caramelized onion squash tart, fall vegetable tart, onion squash tart, rustic squash tart, savory squash tart recipe