Subway is giving out free Cadbury Creme Egg sandwiches in the UK ahead of Easter weekend — and it is surprisingly not a late April Fools' joke

• Subway is debuting a new sandwich that will be given out at four UK locations on Good Friday.
• The sandwich features the chain's Italian bread, with melted Cadbury Creme Eggs inside.

Just ahead of Easter weekend, up to 500 lucky — or perhaps unlucky — customers in the United Kingdom will get a chance to try Subway's latest sandwich creation: The SubMelt with Cadbury Creme Eggs.

Four Subway locations across the UK will each carry 125 of the free six-inch sandwiches, which include the melted Easter treat wedged between Italian bread, according to the chain. The participating stores in London, Liverpool, Glasgow, and Swansea will give out the sandwiches on a first come, first serve basis, the company said Thursday.

A Subway spokesperson assured Insider that the sandwich is not a late April Fools' Day joke, and confirmed the sandwiches will indeed be available in the UK on Good Friday.

"We're delighted to have collaborated with Cadbury this Easter," Rusty Warren, a senior new product development and product innovation manager for Subway, said in a statement. "Our Italian White Bread and Cadbury Creme Eggs make the most flavorsome combination — a perfect seasonal treat!"

The announcement of the sandwich has drawn mixed reactions on social media, with some users calling it "the grossest thing Subway has ever done," while others joked about the likelihood they would be mocked for enjoying it or compared it to putting Nutella on bread.

"The highly-anticipated Creme Egg season is in full swing and we're so excited to launch this innovative product with Subway as a final hoorah of the season," Cadbury Creme Egg brand executive Charlotte Docker said. "We can't wait for the response of those lucky enough to try this surprisingly delicious merging of sweet and savory."