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Caramelized Onion Butternut Squash Tart


  • Author: Mia McKenny
  • Total Time: 85 minutes
  • Yield: 1 tart (serves 6)
  • Diet: Vegetarian

Description

Golden, flaky, and glowing with warmth, this Caramelized Onion Butternut Squash Tart is a savory tart recipe that’s perfect for easy dinner, holiday sides, brunch ideas, or healthy snack options. Featuring slow-cooked red onions, roasted butternut squash, and creamy goat cheese, it’s layered with deep flavor in every bite. Ideal for meal prep or gatherings, this easy recipe is a must-try comfort food idea.


Ingredients

2 cups butternut squash, peeled and cubed

2 large red onions, sliced

1 tablespoon olive oil (for squash)

1 tablespoon olive oil (for onions)

1 shortcrust pastry sheet

3 large eggs

1/2 cup heavy cream

1/2 cup goat cheese, crumbled

1 teaspoon fresh thyme leaves

1/2 teaspoon salt

1/4 teaspoon black pepper


Instructions

1. Preheat the oven to 400°F (200°C).

2. Toss 2 cups of cubed butternut squash with 1 tablespoon olive oil, a pinch of salt and pepper. Roast for 25 minutes until tender and caramelized. Let cool.

3. In a skillet, heat 1 tablespoon olive oil over medium-low heat. Add 2 sliced red onions and a pinch of salt. Cook slowly, stirring occasionally, for 25–30 minutes until golden and jammy.

4. Lower oven temperature to 375°F (190°C). Roll out shortcrust pastry into a 9-inch tart pan. Prick the bottom, line with parchment and baking weights, and blind bake for 15 minutes. Remove weights and bake 5 minutes more.

5. In a bowl, whisk together 3 eggs, 1/2 cup heavy cream, 1/2 teaspoon salt, and 1/4 teaspoon pepper.

6. Layer roasted squash and caramelized onions into baked crust. Pour custard over. Dot with 1/2 cup crumbled goat cheese and sprinkle with 1 teaspoon fresh thyme.

7. Bake for 30–35 minutes until custard is set and top is golden. Let cool 10 minutes before slicing.

Notes

Roast the squash and caramelize onions ahead for quicker assembly.

Let the tart cool before slicing for cleaner cuts.

Fresh thyme can be swapped with rosemary for a different herb profile.

  • Prep Time: 20 minutes
  • Cook Time: 65 minutes
  • Category: Dinner, Brunch, Vegetarian
  • Method: Baking
  • Cuisine: American, Seasonal

Nutrition

  • Serving Size: 1 slice (1/6 of tart)
  • Calories: 320
  • Sugar: 7g
  • Sodium: 380mg
  • Fat: 22g
  • Saturated Fat: 9g
  • Unsaturated Fat: 11g
  • Trans Fat: 0g
  • Carbohydrates: 22g
  • Fiber: 3g
  • Protein: 8g
  • Cholesterol: 135mg

Keywords: savory tart, squash tart, brunch ideas, easy dinner, holiday side