Tomato, caramelised onion and mascarpone tart

Name: Tomato, caramelised onion and mascarpone tart
Prep time: 40 min
Cook time: 50 min
Total time: 1 h 30 min
Yield: Serves 6
Cuisine: British recipes
Ingredients: Extra-virgin olive oil for frying and drizzling; 2 red onions, thinly sliced; 1 tbsp brown sugar; 250g mascarpone; Finely grated zest and juice 1 lemon; 4-5 fresh rosemary sprigs, leaves picked and finely chopped; 4 spring onions, finely chopped; 1 garlic clove, crushed; 320g ready-rolled all-butter puff pastry sheet; 500g tomatoes (a mix of colours and sizes), halved or quartered; A few fresh thyme sprigs, leaves picked

Published: 15 Sep 16
Updated: 18 Mar 24

Test kitchen approved

Caramelised onions, sweet tomatoes and creamy mascarpone tart makes this a vegetarian meal that everyone will want a slice of.

And if you like that, you simply have to try our tomato, thyme and ricotta tart. Once the case is baked, it only takes 10 minutes to finish off!

Serves 6
Hands-on time 40 min, oven time 45-50 min

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Ingredients

Extra-virgin olive oil for frying and drizzling
2 red onions, thinly sliced
1 tbsp brown sugar
250g mascarpone
Finely grated zest and juice 1 lemon
4-5 fresh rosemary sprigs, leaves picked and finely chopped
4 spring onions, finely chopped
1 garlic clove, crushed
320g ready-rolled all-butter puff pastry sheet
500g tomatoes (a mix of colours and sizes), halved or quartered
A few fresh thyme sprigs, leaves picked

Method

Heat a large frying pan with a glug of oil over a medium heat. Add the red onions and fry for 10 minutes, stirring occasionally. Add the sugar and cook for a further 10 minutes until sticky and caramelised.
In a medium mixing bowl, beat the mascarpone with the lemon juice and zest, rosemary, spring onions and garlic. Season. Heat the oven to 200°C/180°C fan/gas 6.
Unroll the pastry onto a baking sheet. Spread with the mascarpone, leaving a 2-3cm border. Top with the red onions, then the tomatoes and a little thyme. Drizzle over a little oil, season, then bake for 25 minutes. Turn the oven to 170°C/150°C/gas 3½. Bake for 20-25 minutes until the tomatoes have shrivelled and the pastry is golden. Replace any burnt thyme leaves with fresh and serve warm.

Recipe from August 2016 Issue

Nutrition

Nutrition: per serving

Calories: 465kcals
Fat: 35.7g (20g saturated)
Protein: 6.2g
Carbohydrates: 27.9g (11.5g sugars)
Fibre: 4.1g
Salt: 0.5g

delicious. tips

Caramelise the onions up to 48 hours ahead. Keep in a sealed container in the fridge.

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