Mayor of Luton, Cllr Tahir Malik, officially cut the ribbon and presented the store's two chosen local charities - Tokko Youth Space and Open House Lounge - with a donation of £250 each.
Tesco store manager Clinton Winn said: “We’re delighted to reopen our Luton Metro today and my team and I are enjoying welcoming back customers.
"We’re honoured to celebrate the occasion with a £500 donation shared by our two charity partners, Open House Lounge and Tokko Youth Space.
"Our thanks to the Mayor of Luton who joined me in cutting the ribbon to officially reopen the store. Please pop in and say hello to the team.”