In my early thirties I made a list of favourite novels, and I've been adding one every year. It doesn't really work as a list of all-time bests, since my taste has changed over the years. But I'd still highly recommend all of these. I can also be found at goodreads.
NOVELS THAT STUCK WITH ME
49. Linda Hogan - Mean Spirit
48. Miriam Toews - Fight Night
47. Kazuo Ishiguro - The Remains of the Day
46. Truman Capote - In Cold Blood
45. Marilynne Robinson - Home
44. Lionel Shriver - We Need to Talk About Kevin
43. P.D. James - The Children of Men
42. Ralph Ellison - The Invisible Man
41. Joseph Boyden - The Orenda
40. Cormac McCarthy - The Crossing
39. Timothy Findley - Not Wanted on the Voyage
38. Kurt Vonnegut - Slaughter-House Five
37. Charles Portis - True Grit
36. Richard Adams - Watership Down
35. Cormac Macarthy - The Road
34. Isaac Asimov - Nightfall
33. Agatha Christie - And Then There Were None
32. Miriam Toews - A Complicated Kindness
31. Barbara Kingsolver - The Poisonwood Bible
30. JD Salinger - The Catcher in the Rye
29. Fredrick Buechner - The Son of Laughter
28. Fyodor Dostoevsky - Crime and Punishment
27. Cormac Macarthy - No Country for Old Men
26. CS Lewis - The Horse and His Boy
25. JRR Tolkien - The Hobbitt
24. Mary Shelley - Frankenstein
23. Fyodor Dostoevsky - The Idiot
22. Nick Hornby - Fever Pitch
21. Khaled Hosseini - The Kite Runner
20. CS Lewis - The Magician's Nephew
19. Graham Greene - The Power and the Glory
18. GK Chesterton - The Napoleon of Notting Hill
17. CS Lewis - The Great Divorce
16. Franz Kafka - The Trial
15. Stephen King - Misery
14. Judith Guest - Ordinary People
13. Yann Martel - Life of Pi
12. GK Chesterton - Manalive
11. CS Lewis - Out of the Silent Planet
10. William Golding - Lord of the Flies
9. CS Lewis - Voyage of the Dawn Treader
8. John Steinbeck - The Grapes of Wrath
7. Fyodor Dostoevsky - The Brothers Karamazov
6. SE Hinton - The Outsiders
5. Alexander Dumas - The Count of Monte Cristo
4. Harper Lee - To Kill A Mockingbird
3. GK Chesterton - The Man Who Was Thursday
2. JRR Tolkien - The Lord of the Rings
1. CS Lewis - Perelandra
I also listed my top 35 non-fiction books - some of which still stands!