Brie & caramelised leek wholemeal tart

Name: Brie & caramelised leek wholemeal tart
Prep time: 25 min
Cook time: 1 h 10 min
Total time: 1 h 35 min
Yield: 8
Ingredients: 200 g wholemeal plain flour; 120 g unsalted butter, 100g diced and chilled; 1 tsp olive oil; 2 leeks, finely sliced; 1 tbsp white wine vinegar; 2 tsp caster sugar; 5 eggs; 200 ml creme fraiche; 2 tsp Dijon mustard; 160 g Duchy Organic Cornish brie, sliced; 4 sprig/s thyme, leaves stripped, plus extra leaves to serve

The wholemeal pastry really enhances the rich filling in this tart which combines creamy brie and slightly sweet caramelised leeks.

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Vegetarian

Serves8
CourseMain meal
Prepare25 mins
Cook1 hr 10 mins
Total time1 hr 35 mins
Pluschilling

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Ingredients

200g wholemeal plain flour
120g unsalted butter, 100g diced and chilled
1 tsp olive oil
2 leeks, finely sliced
1 tbsp white wine vinegar
2 tsp caster sugar
5 eggs
200ml creme fraiche
2 tsp Dijon mustard
160g Duchy Organic Cornish brie, sliced
4 sprig/s thyme, leaves stripped, plus extra leaves to serve

Method

Put the flour and a pinch of salt in a large bowl, add the 100g diced butter and use your fingertips to rub together until it resembles fine breadcrumbs. Add 3 tbsp cold water, then use a palette knife to draw the pastry together. When it starts to clump, bring it together with your hands, adding 1-2 tbsp more water if needed. (Alternatively, use a food processor.) Knead lightly into a disc. Cover and chill for at least 20 minutes.
Preheat the oven to 220˚C, gas mark 7. On a floured surface, roll out the pastry to 0.3cm thick and use to line a 25cm round fluted tart tin (about 2.5cm deep); let the excess pastry hang over the edge. Put on a baking tray and prick the base with a fork. Line with baking parchment, fill with baking beans, then bake for 20 minutes. Remove the parchment and beans; bake for 10-12 minutes, until golden and crisp. Leave to cool, then trim the overhanging pastry. Reduce the oven to 200˚C, gas mark 6.
Meanwhile, heat the remaining 20g butter and the oil in a pan. Add the leeks and a pinch of salt; cook over a low-medium heat for 25-30 minutes, stirring occasionally, until soft and turning golden. Add the vinegar and sugar, raise the heat a little, and cook for 3-4 minutes until slightly sticky.
Use a balloon whisk to whisk the eggs in a large bowl, then whisk in the crème fraîche. Add the leeks, mustard, and a pinch of salt. Pour into the tart case, then lay the brie on top. Scatter over the thyme leaves. Bake in the centre of the oven for 30-35 minutes until set and light golden. Cool in the tin for 5 minutes, then remove. Scatter over the extra thyme leaves and serve warm, or cool completely on a wire rack.