The 25-year-old enjoyed an impressive loan spell with Liam Manning’s side last season before being recalled by the Seasiders - who were suffering a midfield crisis at the time - during the January transfer window.
“I’m over the moon,” Robson said of his move.
“I think everybody knew how much I wanted to return in January but I’m back now and delighted to kick on.
“I really enjoyed my time here. The manager, the staff and the players are great and something really special has been created here. To be a part of that moving forwards is great and I’m really excited.
“The fans have been brilliant with me. I feel like I bonded with them during my short time here last season, so I’m looking forward to playing in front of them again and hopefully we can give them plenty to shout about.”
But he was loaned out the following season to MK, where he made 23 appearances before being recalled to the Fylde coast.