Christmas isn’t Christmas without more brie than you can eat. On Boxing Day in my family, guests are invariably requested to take some of the brie home; and, invariably, everyone feels they’ve had quite enough, thank you. Save yourself from similar exchanges and make this easy, colourful tart with just a handful of readily available ingredients. It’s a celebratory enough main that you could serve it to guests, and cosy enough for a quiet evening in, with simply buttered spring greens or cabbage alongside, or just a green salad.