Slow-roasting tomatoes will intensify their flavour and sweetness. Serve warm for best resultsIngredients:200.0g plain flour , plus extra for dusting3.0 tbsp pesto (choose a vegetarian one)2 eggs100.0g butter , cut into small pieceshandful basil leaves , torn100.0g grated Gruyère (or vegetarian alternative)150.0ml milkIngredients FOR THE PASTRYhandful black olivesFOR THE FILLING1.0 tbsp olive oil150.0ml single cream50.0g…