Driven by the trend for nights in, chocolate consumption at home has grown by 20% since 2009 according to Mars.
And it claims the bitesize category has grown by 22% in that time.
A spokesperson said: “Mars Chocolate UK is the market leader in the bitesize category with a 47% share, and four out of the top five bitesize brands.”
It suggests that if retailers are to get the most from confectionery sales, as well as stocking popular ranges, they should create a big-night-in display.
The spokesperson added: “Consumers are keen to try a new twist on their favourites.
“Retailers can take advantage of this through stocking products such as Twix Mix which launched in 2013 in sharing bag format.”
• Ferrero has introduced a new range of bite-sized Kinder products.
Three varieties are available in two sizes at RRPs of £1.55 and 54p.