This tart looks like something you might have bought from a French patisserie, but it is so easy to make. Serve it gently warmed with a dusting of icing sugar, or top it with chocolate curls, drizzle with melted chocolate or top it with a little whipped cream and fresh summer berries. Or all three. Equipment and preparation: you will need a 23cm/9in fluted flan tin, 3cm/1¼in deep and baking beans.