SteamFresh Leeks, Sugar Snap and Garden Peas in a Garlic and Parsley Butter comes in a microwaveable bag that contains four individual portions.
Unilever said the product - which has an rsp of £1.59 - should help drive consumers away from fresh by introducing leeks into the frozen category.
James Simmons, trading director of Unilever Ice Cream and Frozen Food, said: “Consumers know they should eat more vegetables, but preparing food can be time consuming. SteamFresh is convenient, quick and easy to use, and each individual portion provides one of the recommended five-a-day.”
The range will benefit from a £19m marketing spend on the Birds Eye brand this year.