Supermarkets are discussing ways to bring back top-up vouchers for a government scheme that helps struggling families with the cost of healthy essentials.
Bosses from Tesco, Sainsbury's, Asda and Aldi told MPs they were in talks with industry bodies about how to bring back the vouchers to boost the Healthy Start programme.
Oonagh Turnbull, head of health and sustainable diets at Tesco, told the Health and Social Care Committee the company was "actively involved in conversations with industry bodies to see what was possible".
Nilani Sritharan, Sainsbury's head of healthy and sustainable diets, said the supermarket was willing to offer £2 top-ups to the scheme if some changes were made.
The programme gives eligible parents a prepaid card worth £8.50 a week for children under one and £4.25 a week for pregnant mums and children from one to four.
The card can be used to buy milk, vegetables, baby formula and vitamins.
During the pandemic, retailers gave those families an extra £2 a week to spend.
But they have since raised concerns that moving to a prepaid card, instead of using paper vouchers, has made it harder for them to police and identify the customers who need the top-up.
Sritharan said Sainsbury's had already raised the issue with the government.
Beth Fowler, senior manager for health and sustainable choice at Asda, told the committee: "Because it is a debit card, we cannot control for example, what customers are buying with that card and we have concerns around topping that up for customers and it not being used on the categories the government intend it to be used for."