Little Temptations are clusters of chocolate, cornflakes and fudge and come in milk and dark varieties. They will be sold by Tesco, Morrisons, Asda, The Co-operative Group and Nisa.
The product comes in 110g zip-lock bags, which Finsbury has claimed is a category first.
Natalie Nairn, Finsbury Food Group brand manager, said: “As market leader in the cake bites segment, we know what works well. We are excited to be launching the first cake bite into the market that is packaged in a fantastic re-sealable bag.
“Increasing numbers of consumers want treats that can be shared in and out of home and we believe the format of Little Temptations fits this perfectly.”
Thorntons has a 40% share of the £35m cake bites market and has seen its sales grow 25% [IRI 52 w/e 18 July 2015].