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Sweet Potato, Feta & Caramelised Onion Tart

Sweet Potato, Feta & Caramelised Onion Tart

  • Author: Madison
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Total Time: 45 minutes
  • Yield: 4 servings 1x
  • Category: Main Dish
  • Method: Baked
  • Cuisine: Vegetarian / European
  • Diet: Vegetarian

Description

This Sweet Potato, Feta & Caramelised Onion Tart is a savory, comforting dish featuring tender roasted sweet potatoes, tangy feta cheese, and sweet caramelised onions on a flaky pastry base. It’s perfect for brunch, lunch, or a light dinner.


Ingredients

Scale
  • 1 sheet puff pastry (thawed if frozen)
  • 1 medium sweet potato, peeled and thinly sliced
  • 2 tbsp olive oil, divided
  • 1 large onion, thinly sliced
  • 1 tsp balsamic vinegar
  • 3.5 oz (100g) feta cheese, crumbled
  • 1 tsp fresh thyme leaves (or 1/2 tsp dried)
  • Salt and pepper to taste
  • 1 egg, beaten (for egg wash – optional)

Instructions

  1. Preheat oven to 400°F (200°C). Line a baking tray with parchment paper.
  2. Heat 1 tbsp olive oil in a pan over medium heat. Add sliced onions and cook slowly, stirring occasionally, for about 15–20 minutes until deeply golden. Add balsamic vinegar in the last 2 minutes. Set aside.
  3. Toss sweet potato slices with 1 tbsp olive oil, salt, and pepper.
  4. Place puff pastry sheet on the prepared tray. Lightly score a border about 1/2 inch from the edge. Prick the center with a fork.
  5. Spread caramelised onions evenly over the pastry base (inside the border). Layer sweet potato slices over the onions. Top with crumbled feta and sprinkle with thyme.
  6. Brush the edges of the pastry with beaten egg for a golden finish (optional).
  7. Bake for 25–30 minutes until pastry is golden and crisp, and sweet potatoes are tender.
  8. Let cool slightly before slicing. Serve warm or at room temperature.

Notes

  • Use goat cheese or ricotta as a substitute for feta if desired.
  • Pairs well with a simple green salad.
  • Can be made ahead and reheated in the oven.

Nutrition

  • Serving Size: 1/4 tart
  • Calories: 370
  • Sugar: 6g
  • Sodium: 420mg
  • Fat: 24g
  • Saturated Fat: 9g
  • Unsaturated Fat: 13g
  • Trans Fat: 0g
  • Carbohydrates: 31g
  • Fiber: 3g
  • Protein: 7g
  • Cholesterol: 40mg

Keywords: sweet potato tart, caramelised onion tart, feta tart, puff pastry tart, vegetarian savory tart