This speedy filled pasta gratin with spinach and crème fraîche is a seriously impressive supper – especially when you consider that it only uses five basic ingredients. Store-bought filled pasta is the star of the show in the easy, cheesy bake – you can choose your favourite flavour or mix and match to suit your diner’s tastes. Once that’s sorted, it’s a case of stir, sizzle under the grill and serve – simple as that!