Blunham and Flitwick will battle it out in the Heritage Cup final on Friday, July 4.
Blunham earned their place in the final after defeating Eaton Socon on Monday night in their re-arranged semi-final to set up a repeat of the Butcher Shield final line-up.
Flitwick beat Southill Park in the other semi last week.
It starts at 6pm at The Hollow in Potton.
The East Beds Senior Shield final, between Waresley and Southill or Potton, will take place at Ickwell on Wednesday, July 9 at 6pm.