puzzle

 ACROSS

  1 Split the bill 

 11 Wet dog emanation

 15 "Is everything all right?"

 16 Granny

 17 "Close enough"

 18 Difficult journey

 19 Game with +2 cards

 20 "Salt, Fat, Acid, ___" (Samin Nosrat book)

 21 "If ___ Walls Could Talk 2"

 22 Boatload

 23 Possesses

 24 Yelled out

 26 Pose for a portrait

 27 Pairs of rhyming rap lyrics

 30 Metronomes' outputs

 33 Withdraw, as from bottle-feeding

 34 Piece of course feedback, informally

 35 Organization that really delivers?

 38 Tandoori bread

 39 Sword handle

 40 Underneath

 41 You can't lose with them

 43 Be laid up

 44 Burglar

 45 Subway alternative

 46 "All the Things ___ Said" (t.A.T.u. song)

 49 Space object with a tail

 51 Doing a task

 53 Golden Bears' univ.

 54 Sign of the future

 55 Substance on which it's hard to lie?

 58 "Rats!"

 59 "Is the party over?"

 60 Chip in chips

 61 Pickled pepper picker

DOWN

  1 Run the ___ (cover everything)

  2 University of Maine's town

  3 "Great blue" bird

  4 "Yes, captain!"

  5 Where to go in England?

  6 Russian headwear

  7 Foot parts that may touch hot sand

  8 SNIGLAR crib seller

  9 Home to Cape Cod and Cape Hatteras

 10 ___ admin

 11 Aboveboard

 12 Speed demon, for instance (aptly!)

 13 Too big for ___ britches

 14 Roulette table scraper

 21 Word following "hot" or "wing"

 23 Snake sound

 25 Magical letter

 26 Classic rock monument?

 27 Building blocks of life

 28 Food with a shell

 29 Boatload

 30 "___ of Steel" (1987 workout video)

 31 Hairy son of Isaac

 32 Rental in a complex

 33 "Hold on, I'll be right there!"

 36 Rapper Megan ___ Stallion

 37 Softball stats

 42 Smidgen

 43 Sarah Waters or Patricia Highsmith

 45 "Danke" response

 46 Leftover piece of fabric

 47 Lead-in to "couture"

 48 Bovine glue mascot

 49 Musical ending

 50 Muscat's sultanate

 52 When the stars come out in Cannes

 55 Touch, as a phone screen

 56 Soak (up)

 57 Name within "Celia"

solution