Oatibix Flakes Nutty Crunch will roll-out from 28 February in 450g packs, retailing at £3.29.
The packs are an “HFSS-compliant addition to the range” and are “packed with honeycomb pieces, honey-coated corn flakes and caramelised nuts”.
Oatibix is also set to launch a new pack design across its entire range, supported by a TV advert as part of a wider £2m investment.
Gareth Turner, head of marketing at Weetabix, said: “Oats are a signpost for healthy eating, and this innovation offers great health nutrition, as well as performing incredibly strongly in our taste tests.
“As the whole Oatibix range is HFSS-compliant, we can put our full support behind the brand refresh, through online and in-store shopper marketing, the upcoming TV advert and on social media.”