Caramelised Onion & Cheddar Tart - cooking recipe

Ingredients

1 1/2 plain flour
100 g butter, chopped
3 -4 tablespoons ice water
1 tablespoon olive oil
3 large brown onions, halved and sliced
100 g cheddar cheese, crumbled
1 tablespoon thyme leaves
5 eggs
1/2 cup cream

Preparation

Place flour in a food processor and add butter. Using the pulse button, process in short bursts, until mixture resembles breadcrumbs. Add 3 tbsp water and process in bursts until dough begins to clump together. Pinch a piece to feel if it is moist enough, and add a little more water if it is too crumbly.
Turn out dough onto a work surface, and gather into a ball. Roll out on a sheet of non-stick baking paper to fit a 24cm (base measurement) loose-bottom flan tin. Line tin with pastry, and trim edges (reserve the paper). Refrigerate for 20 minutes.
Preheat oven to 180\u00b0C or 160\u00b0C fan. Line pastry with paper, and fill with dried rice or pastry weights. Bake for 15 minutes, then remove paper and beans and cook a further 15 minutes, until dry and lightly golden. Cool completely.
Meanwhile, heat oil in a large frying pan and add onions. Cook over medium-low heat for about 35 minutes, until a deep golden colour. Season well with salt and pepper and transfer to a bowl to cool.
Spread cooled onions over pastry base. Sprinkle cheese over, then thyme leaves. Lightly whisk eggs and cream together, and pour over the filling. Stand on a tray and bake for 30-35 minutes, until set and golden. Serve warm, or at room temperature.