Marshmallow Coast began in 1996, with a self released cassette recorded by singer/songwriter Andy Gonzales,  which featured contributions from Joel Richardson. Gonzales then recorded Timesquare with Julian Koster in 1997, although it was not released until 2000 due to various label disputes.
Gonzales dropped the project briefly to tour with the Music Tapes, and relocated to Athens, GA in 1998.  In Athens, Gonzales met Kevin Barnes and Derek Almstead. With Barnes, Gonzales recorded Marshmallow Coast's debut LP Seniors & Juniors, released in 1999. Gonzales joined of Montreal that same year.
The next two albums, Marshmallow Coasting and Ride the Lightning were produced by Almstead.  Gonzales then recorded Antistar with Sarah KirkPatrick, which was produced by Jason NeSmith and released in 2003.
In 2005, Gonzales announced the project would show same changes as Almstead began to contribute to songwriting. Emily Growden and Carlton Owens joined the group, and the name was changed to M Coast. A new album entitled Say It in Slang was released on HHBTM Records in 2006. In November 2007, it was announced the group had parted ways. Gonzales reverted the name back to Marshmallow Coast.
Marshmallow Coast returned in 2009 with the release of Phreak Phantasy on HHBTM.
- Seniors & Juniors (CD) - Kindercore Records - 1999
- Timesquare (CD) - Spare Me Records - 2000
- Seniors & Juniors (CD/LP) - Pickled Egg Records - 2000
- Marshmallow Coasting (CD) - Kindercore Records - 2000
- Ride the Lightning (CD) - Quattro/Misra Records/Pickled Egg Records - 2001
- AntiStar (CD) - Misra Records - 2003
- Say It in Slang (CD) - Happy Happy Birthday to Me - 2006
- Phreak Phantasy (CD) - Happy Happy Birthday to Me - 2009
- Seniors and Juniors Strikes Back (CD) - Happy Happy Birthday to Me - 2011
- Vangelis Rides Again (CD) - Happy Happy Birthday to Me - 2015
- Memory Girl (LP) - Happy Happy Birthday to Me - 2018
Singles and EPs
- Marshmallow Coast (cassette) - Fuzzy Aloof - 1996
- "I'm a Big Kid Now" (split single w/Midget and Hairs) (7") - Fuzzy Aloof - 1996
- "Scent of Credibility" (7") Spare Me Records/Fuzzy Aloof - 1997
- Happy Happy Birthday to Me singles club: October (7") - HHBTM - 1999
- Kindercore singles club: January (split single w/My First Keyboard) (7") Kindercore Records - 2000
- "Archibald Of The Balding Sparrows" (split w/Of Montreal) (7") Kindercore Records - 2000
- Ankeny, Jason. "Marshmallow Coast". Allmusic.com.
- Taylor, Joey. "Andy Gonzales (Of Montreal) - Musician - Processed". anchor.fm. Retrieved 12 December 2020.
- Fink, Matt. "Ride the Lightning". AllMusic.
- "Marshmallow Coast – Marshmallow Coasting". discogs.com. Retrieved 12 December 2020.
- Morris, Kurt. "Antistar". AllMusic.
- Schabe, Patrick (4 November 2003). "Marshmallow Coast - Antistar". Popmatters.
- Bergstrom, John. "Marshmallow Coast: Seniors & Juniors Strikes Back". popmatters.com. Retrieved 12 December 2020.