I'm reading Labyrinth by Kate Mosse at the moment, and finding it to be an easy but compelling read. I need to know what happens, but I don't have to spend a lot of time thinking about it.
You might like Among Others by Jo Walton. It has a touch of fantasy about it but also has a lot of references to the main character reading lots of sci-fi and fantasy books and her thoughts on them.
I will second the recommendation for Life After Life by Kate Atkinson, but Jo Walton has also written a similar sort of book called My Real Children, and is based around Patricia, who in one moment, with a yes or no answer, splits her life in two and lives on as Trisha, a wife and mother, and one as Pat, successful writer.
Have you read the Wool Trilogy by Hugh Howey? It starts in a place called The Silo, with a group of people living underground and unable to go outside into the toxic atmosphere. They have a whole community and it beings with Juliette investigating a death. It sounds strange but I thought it was very good.
And have you tried Anne Tyler's books? My favourites aren't her most recent, but I love The Clock Winder, Saint Maybe, Morgan's Passing, Dinner at the Homesick Restaurant, and Digging to America. Again, they are books you can read easily but want to know what happens.