"Our shoppers are marshmallow lovers," said Foodstuffs spokeswoman Catherine Reiss.
"The top two sellers for Easter week are likely to be the 10-pack and the eight-pack of Cadbury foil-wrapped marshmallow eggs.
"In the North Island alone, Foodstuffs will sell more than 68,000 packets of them in the week leading up to Easter."
Countdown's merchandise manager Chris Fisher also named the marshmallow egg as Kiwis' favourite based on sales figures.
And the holiday wasn't just an excuse to gorge on chocolate.
Last Easter Countdown sold 12 million individual hot cross buns and the company expected to sell even more this year, 12.5 million by the end of Easter - nearly three buns for every Kiwi.
Its bakers power through more than 600,000kg of wheat, 55,000kg of sultanas and 12,000kg of Hershey's chocolate chips in the dough being made in the lead-up to Easter.
Hot cross buns have been on the shelves since January, and despite purists' protests that was too early, sales figures showed one million were sold in that first month alone.
Fisher said Easter treats were on people's minds well before the holiday itself began.
"Kiwis' love affair with hot cross buns seems to start as soon as they finish their
mince pies and pavlovas from Christmas," he said.
"Traditional fruit hot cross buns are still our most popular flavour, making up 50 per cent of our sales.
Chocolate came second followed by fruitless buns.
Countdown anticipates selling 89,000kg of the famous chocolate bunny which is the equivalent weight of approximately 65,000 real rabbits.
At Foodstuffs stores, 260,000 Malteser chocolate bunnies were sold in the last 12 week Easter period in the North Island alone.
Going away for Easter weekend? These councils allow unrestricted shopping on Easter Sunday:
Carterton
Central Otago
Clutha
Far North
Grey District
Hauraki
Kaikoura
Kaipara
Kawerau
Marlborough
Masterton
Napier
New Plymouth
Opotiki
Queenstown-Lakes
Rangitikei
Rotorua
Southland
South Taranaki
South Wairarapa
Stratford
Thames-Coromandel
Waikato
Wairoa
Waitomo
Historical geographic exemptions for shopping also include:
Auckland - Parnell Rd from 10am to 6pm
Christchurch - Arts Centre from 10am to 4pm
Dunedin - The Carnegie Centre from 7am to 9pm, but only for the sale of arts, crafts, children's toys and books (and toys and books can only be sold if there is a performance on the Mezzanine Floor)
Hamilton - Market Place and Collins Rd from 9am to 5pm
Nelson - but only for the sale of arts and crafts when Founders Park is open
Paihia - 7am to 9pm
Taupo - CBD from 10am to 3pm