Mozzarella sticks are back on the menu at McDonald’s... but the cheesy snack has left some diners disappointed after one vital ingredient was overlooked.

The fast food giant has been serving up the limited-edition snack since its welcome return last week.

However, one fast food fan opened her three-pack of mozzarella sticks to find they were missing the filling.

Catherine Murphy, 24, bit into her McDonald’s meal from the Chaloner Street branch yesterday only to realise her cheesy dippers had no cheese.

She said: “I was devastated. I was really looking forward to them because they’re my favourites and it was just hollow bread.”

The sticks were almost completed hollow leaving Miss Murphy disappointed with her lunch.

This isn’t the first time McDonald’s have left customers underwhelmed with their hollow cheese bites.

Back in 2016 more McDonald’s lovers were left confused after buying mozzarella sticks... with no mozzarella.

Fans took to Twitter to share their outrage over the missing ingredient.

Courtney Wright said: “When you get mozzarella sticks but there is no cheese in them… lunch ruined.”

Francesca Heavens said: “McDonald’s what is this?!? My mozzarella stick had no cheese! How is that even possible?? Where is the cheese.”

Amber said: “Craving mozzarella sticks. Excited that McDonalds has them! Just to get home to have hollow breading.”

According to the McDonald’s website the sticks are “made with 100% real and melty mozzarella cheese breaded with a golden crust based in wheat flour that includes onion, garlic and a pinch of salt.”

The popular sides are meant to be served hot with a side of “zesty tomato-based marinara sauce”.

Mozzarella sticks have been back on the menu since February 7 - but they won’t be around for long.

McDonald’s confirmed to the ECHO that the Mozzarella Dippers and Salsa Dip will only be around until March 20. You get three dippers and salsa for £1.59.