Cadbury Creme Egg craze is a thing, but why?

From McFlurries to pizza, Cadbury Creme Eggs seem to be a hit...but not so much here.

Cadbury Creme Eggs seem to be taking the the world by storm, and we're not just talking as a seasonal flavor craze of spring.

Last week, amid much fanfare, McDonald’s announced it was launching a Cadbury Creme Egg McFlurry. The limited-edition McFlurry is only at locations in Australia, but the popular flavor has also made appearances in the U.K., Canada, and Australia.

Okay, a sweet, chocolaty shake, we get that.

Now a U.K. pizza parlor has a pie topped with the chocolate treat.

Crazy Pedro’s in Manchester has unveiled what it calls “I Am The ResurrEGGtion,” a 10-inch pie “covered with chocolate sauce, sprinkled with marshmallows, brownie, meringue and topped with a soft creme egg,” according to the restaurant’s Instagram feed.

“Easter is the time to indulge and what better way than to fill your face with pizza and chocolate?,” Lyndon Higginson, executive director of Crazy Pedro’s, said.

First invented in Britain, the Creme Egg has a popular following in U.K., Canada, Australia and New Zealand, although sales of the holiday confection plummeted by about 6 million pounds (about $8 million) after the company changed the recipe in 2015 to include a cheaper, lower-quality chocolate. (The U.S. version is made by Hershey and they didn't change the recipe).

Yet, fans continue to hyperventilate over the treat. In January, people were all egg-cited (sorry) over Cadbury’s Creme Egg pop up cafe in London.  And now the flavor is finding its way into everything from peanut butter to cookies.

So, will it really take off here?  We're not so convinced.

For now, Americans will be sipping McDonald's Shamrock Shakes and will be eating some of the 2 million Peeps that the company Just Born pumps out each year --all year around.