Rosie received the Newcomer of the Year award at the IRN News award ceremony in London last night.
Judges praised her "clear-eyed reporting, creative presentation and mature handling" of the most challenging situations.
Her reporting at the Calais Jungle showed her "energy, enthusiasm and ability to bring out the best in people", the judges added.
After winning her award, Rosie said: ""I'm overwhelmed to have won the award for Best Newcomer, and delighted that the news on Inspirational Breakfast has been recognised.
"It's been a remarkable year for news. Over the last 12 months on Inspirational Breakfast I've been able to break the news to our audience that we're leaving the EU, announce that Donald Trump had won the election, ask the Most Rev Archbishop of Canterbury Justin Welby how he wanted to vote in the referendum (he said that was between him and God), and report on the refugee crisis live from the Calais camp.
"I am so grateful to the news team at Premier Christian Radio, and the support from the Inspirational Breakfast team."
Rosie co-presents Inspirational Breakfast alongside John Pantry every weekday.