McDonald's testing Chicken Big Mac in the US

McDonald's Chicken Big Mac was a huge hit in the United Kingdom. Now it's crossing the pond.

Beginning later this month, the burger chain is testing the fan favorite at select restaurants in Miami for a limited time. The Chicken Big Mac is similar to its meaty sibling, however it replaces the two burgers with two tempura chicken patties. Of course, it also includes the signature Big Mac sauce, pickles, shredded lettuce and a slice of American cheese.

McDonald's briefly sold the limited-time offering earlier this year in the UK. The Chicken Big Mac was so popular that it sold out about 10 days after it made its debut. The chain said that it was its "most popular launch ever" in the UK and Ireland.

In a statement, McDonald's said that it's "always looking to give our fans more ways to enjoy the classic menu items they know and love." However, it cautioned that the Chicken Big Mac is just being tested and it will use "this time to gather feedback from both customers and restaurant crew as we consider opportunities to offer more delicious options in the future."

Chicken is cheaper than beef and is a favorite among fast food eaters (see: the ongoing chicken sandwich war). Poultry is also a "priority area" for the company, according to McDonald's CEO Chris Kempczinski.

"Chicken continues to be a significant opportunity for us," he said in an recent earnings call. "We've got some great global equities already in our McNuggets and with McChicken, but we also have some equities in McCrispy and McSpicy that we think we've got an opportunity to do more with globally."

McDonald's said in July that sales at its US restaurants open at least 13 months jumped 3.7% in the second quarter, with growth being driven by higher menu prices and "value offerings" on its regular menu as well as through its app.