Preheat the oven to 200℃ (180℃ fan)/400°F/gas mark 6.
Place 200g flour and 100g butter in a food processor and whizz until the mixture resembles fine breadcrumbs Or rub the fat into the flour with your fingertips.
Add enough water to mix to a smooth dough. Cover and chill for 30 minutes.
Meanwhile place 1 small onion cut into wedges , 250g courgette and 250g aubergine, cut into chunks along with 125g baby carrots in a single layer on a baking sheet and drizzle with 2 tablspoons oil. Scatter t teaspoon dried herbs on top, season well and toss the vegetables to coat in the oil.
Roast for 20 minutes until the vegetables are beginning to soften. Remove from the oven and allow to cool slightly.
Roll out pastry to form a circle about 30cm/12in across. It does not have to be a perfect circle.
Transfer to a baking sheet. The easiest way to do this is to fold it over your rolling pin and use this to lift it. Pile the roasted vegetables into the middle of the circle then add 200g cherry tomatoes and 150g cheese.
Turn up the edges of the pastry around the filling to form a pastry case. If it tears, simply stick back together and brush the pastry with a little beaten egg or milk.
Spoon 4 tablespoons crème fraiche over the vegetables. Bake for 35 minutes or until the pastry is crisp and golden
Notes
Nutrition information is approximate and is meant as a guideline only. (It does not include seasoning with salt and pepper.) Cook's TipsA food processor speeds up pastry making. I find it easier to pulse the fat and flour together until fine bread crumbs then tip into a mixing bowl before adding the water by hand. If you don't have a food processor, simply rub the fat into the flour with your fingertips.StoreThe pie is best eaten the same day it is made but can be kept in the refrigerator for up to 3 days.