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–+ servings
Puff Pastry Tart filled with sweet potato, red onions, mushrooms and mozzarella cheese on a baking tray that is on a wooden board.

Sweet Potato Red Onion Puff Pastry Tart

This easy Sweet Potato Red Onion Puff Pastry Tart uses store-bought pastry for faster results and is great for brunch or a family weekend lunch. Full of healthy, tasty vegetables inside a puff pastry base.
5 from 1 vote
Author: ND
Servings 6
Print Pin
PREP 20 minutes
COOK 35 minutes
TOTAL 55 minutes

Ingredients
 

  • 3-4 medium-sized Sweet Potatoes
  • 2 tablespoons Olive oil
  • 2 large Red Onions, thinly sliced
  • 6-8 medium-sized Mushrooms, thinly sliced
  • 1-2 cloves Garlic, optional, thinly sliced
  • Sea salt, to taste
  • Black Pepper, to taste
  • 1 x Puff Pastry sheet 10"x15"
  • 125 grams/4 ouncesMozzarella or cheddar cheese
  • Rocket/Arugula leaves

Instructions
 

  • Preheat your oven to 400°F.
  • Peel the sweet potatoes and cut into thin discs.
  • Place in a bowl with the olive oil, sea salt and black pepper. Coat with the oil.
  • Place the sweet potatoes onto a baking tray and bake for 15 minutes until just soft.
  • Start by frying the red onions first gently for a few minutes, then add the mushrooms and continue to fry on a medium heat.
  • Lastly, add the sliced garlic and continue to fry for around another minute to flavour the red onion and mushroom mix.
  • Unroll the puff pastry sheet, keeping the parchment paper it was wrapped in, onto a large baking sheet pan/tray.
  • Prick the pastry all over inside the border with a fork.
  • Brush the border with beaten egg this will make the puff pastry lovely and golden when baked.
  • Place the roasted sweet potatoes onto the puff pastry base.
  • Pile the red onion, mushroom and garlic mix evenly over the sweet potatoes.
  • Place blobs of Mozzarella into the mix or grate some Cheddar cheese over, both are equally delicious!
  • Bake in the oven for 20-25 minutes until the puff pastry is well risen and golden.
  • Season to taste.
  • Scatter some Rocket/Arugula leaves over the tart and serve.

Recipe Notes

This puff pastry tart is best served immediately but any leftover is still delicious the next day, although the puff pastry base may be a little soft unless you reheat it for 5 minutes.

*Make sure to scroll up and read the post for substitutions, additions and helpful tips for making this recipe.

Course Main Course
Cuisine vegetarian

*Nutritional data is provided as a courtesy and is accurate to the best of my knowledge. You can verify it using the nutrition calculator of your choice. All data is based on net carbs, without sugar alcohol: Swerve, Erythritol, Monk Fruit or Allulose.

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