castello-fullfavorites iconBasket Copyicon-checkmarkicon-facebookicon-globeInstagramicon-pinterestCastello sustainability-08 Copy 7icon-youtubeservings icon mediumtimerTime icon big
Onion tart with Castello® Creamy White and Fresh Tomatoes

Onion tart with Castello® Creamy White and Fresh Tomatoes

4 servings

Cheesy onion puff pastry tart is tasty and easy to make. With just a few ingredients and 15 minutes in the oven, you can enjoy a flaky and light puff pastry onion tart with a creamy melted cheese. The whole thing is topped off with savoury red onions, fresh and sweet cherry tomatoes, and green herbs. Try this cheese and onion puff pastry tart with tomatoes when you need a quick and easy starter, a side dish for a family dinner or a snack to serve for guests. The combination of flavours and textures are sure to be a crowd-pleaser.

Read more


  • 30 - 100 g Castello® Creamy white
  • 1 sheet (large) puff pastry or 3 sheets (75g each)
  • 1 egg, beaten
  • 10 cherry tomatoes
  • 1 medium red onion
  • 3 tbsp fresh parsley, finely chopped
  • thyme leaves
  • 1 tsp olive oil
  • salt and freshly ground pepper


1. Cut the red onion into slices and place in a mixing bowl with the olive oil, salt and pepper.

2. Cut the puff pastry into 3 even-sized rectangular pieces, carve a square pattern, 1cm from the edge, on the surface of the dough, make sure not to cut through the dough. This will create a puffy crust and a flatter centre.

3. Brush the pastry twice with the beaten egg.

4. Keeping inside your square, spread the onion out. Cut your left over cheese into slices and spread out evenly on top of the onion.

5. Bake the puff pastry in the oven at 200°C for 15 minutes (convection oven).

6. While in the oven cut cherry tomato into quarters and mix with olive oil, parsley and season with salt and pepper.

7. When the puff pastry is cooked, divide the tomatoes out on top and serve right away on a serving tray or wooden board.

Serving Suggestion

Serving Suggestion

If you have leftover Creamy White and puff pastry, you can use it to make dessert. Instead of a cheese and onion tart, you can make a delicious dessert with most of the same ingredients. Prepare the puff pastry as described in this recipe and place thin slices of pear on top instead of onions followed by slices of cheese. You can drizzle a bit of maple syrup and sprinkle with chopped walnuts for some extra crunch and sweetness. Bake in the oven for 15 minutes at 200°C.

Sensory hack tip

Sensory hack tip

Adjust the flavour by using your favourite herbs. Thyme and parsley are delicious, but you can also use other fresh herbs to create your own version of onion puff pastry tart. One of the best herbs to pair with soft cheese is rosemary. It is minty, lemony, and peppery and tastes a bit like sage and pine, which goes well with the soft and sweet cheese. You can also use garlic to add a bit more spice to your onion puff pastry tart.


  • How to make onion tart with puff pastry?

    Onion tart with puff pastry is quick and easy to make. Prepare the puff pastry by scratching a square pattern and brushing with beaten egg. Add red onion and cheese and bake in the oven for about 15 minutes. Add fresh cherry tomatoes and herbs on top before serving. Find more details in our recipe.

  • Can you make onion puff pastry tart in advance?

    Yes. If you want to save time, we recommend that you prepare the onion puff pastry tarts so they are ready to bake just before serving, but you can also bake them in advance, so you just have to reheat them before serving.

  • Can you freeze onion puff pastry tart?

    You can freeze baked as well as un-baked onion puff pastry tarts. Just make sure that they are covered in foil and placed properly in the freezer, so they are not crushed by other things.

  • What to serve with onion tart?

    The small onion puff pastry tarts in this recipe are perfect as a pre-dinner snack or as part of a bigger serving of different finger foods. You can also serve it as a main dish with a fresh salad, a steak, roasted chicken, fish or the like.