I was going to say exactly the same. Most Nigel Slater books, and especially Eat.
I like what he says in the introduction: Sometimes we want to cook purely for the pleasure of it [...] but sometimes, we just want to eat. This little book is for those times.
Original, robust recipes, easy to scale, with photos of the finished recipes, and short recipes that tell you exactly what you need to know to make it work.
Other books I like when I want something easy: The Flavor Thesaurus by Niki Segnit, although I think you need some cooking experience to make it work. 365 reasons to sit down and eat by Stephane Reynaud. Short recipes, many photos (although some are not the finished product but the ingredients). The Frugal Gourmet books are not bad either.