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Caramelized Onion Butternut Squash Tart

Caramelized Onion Butternut Squash Tart is a flaky puff-pastry tart filled with sweet caramelized onions, golden roasted butternut squash, creamy goat cheese, and fresh thyme — perfect for fall gatherings, holiday tables, or simple cozy dinners.
Calories:
Author: Sandra Myers

Ingredients

  • 1 sheet puff pastry
  • 2 medium butternut squashes diced (about 2 lbs)
  • 2 large onions thinly sliced
  • 2 tablespoons olive oil
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • 1 teaspoon fresh thyme or ½ teaspoon dried thyme
  • 1 cup goat cheese or feta for a tangier taste
  • ¼ cup heavy cream or dairy‑free alternative
  • 1 egg for egg wash
  • Optional: red pepper flakes

Instructions

  • Preheat the oven to 400°F so the squash and onions caramelize properly.
  • Toss diced squash with olive oil, salt, and pepper, then roast 25 to 30 minutes until tender and lightly browned.
  • Cook sliced onions in olive oil with a pinch of salt for about 20 minutes until golden and caramelized.
  • Roll out the puff pastry, fit it into a tart pan, and prick the base with a fork.
  • Layer the caramelized onions, roasted squash, goat cheese, cream, and thyme in the tart shell.
  • Bake 25 to 30 minutes until the crust turns golden and the cheese softens.
  • Let the tart cool for 10 minutes before slicing for neat, even cuts.