Cryptic crossword No 3,457

Across

1. Put on first part of the event without dessert, ergo the confusion, but it's not up for discussion (3'1,4,2,5) (4,4,2,5)
2. Where you should ethically shop for something dietary (5)
3. Works out cryptic way Europe forms the EU (5,4)
4. Refuse to speak very bad (5)
5. Woman swerved vehicle to retaliate (6)
6. Spooner's at any old hotel for some orange (8)
7. Historical relationship of Hamilton to Burr omits relationship's origin (8)
8. Grounds misbehaving scamp for swallowing plum's pit (6)
9. Hesitation in quick march loses half of lead? (5)
10. It's that sudden realization when a bad actor starts talking after, maybe, the appearance of croaking ravens in Macbeth (3,6)
11. Wait, this point must be made: ions sit in no particular order (2,1,6)
12. Trusting early American surrenders West in Treaty (5)
13. To understand, take apart serving components for large gathering (7,8)
14. Sinners, for example, die after sins exposed by flimflam? (5,4)

Down

1. Discovering red is one side in the "War of Currents" (6)
2. Disgusting man guide that's just naked women for immature boys (5,3)
3. Guides hooks while changing hands (5)
4. CSI - I'm on TV playing dead bodies (7)
5. For example, dead bodies on TV are rarely objectified like every show's lead characters (5)
6. Proper recipes are formulated (7)
7. Beats me that, flipping the one digit, 411 connects to Drug Enforcement Agency (1'2, 2,4) (9)
8. Actor's audition edgy. Oscar? They say 4!! (7)
9. Central cortex is ten cerebra holding life (9)
10. It makes things go smoother when Los Angeles Times backs her musical (8)
11. On second thought, we shouldn't scorn other's inner thoughts (2,3)
12. What this puzzle doesn't feature is the setter (5)
13. Unfocused rants are dire sign following glimpse of being overwhelmed by memory loss (9)
14. Left when first sign of an outlaw settled close to Deadwood (9)
15. Yellow card for sale gets initial cost raised (7)
16. Voluptuous Arwen, Frodo, and their leaders heading to Isengard sitting in the saddle of a Nazgul (6) (Deep cut LOTR reference) (6)