Bartlett Mitchell's New Year DARE (Delicious and Responsible Eating) campaign has been the company's most successful so far, with sales up 11% from last year.
The caterer saw its engagement on social media also increase by more than 200% as a result of the ‘New Year, New You' healthy-eating campaign.
In addition to hot meals, DARE includes sandwiches, soups, boxed salads, hot deli items and breakfasts.
The firm said customer feedback has been "incredibly positive" and it has had more requests for the recipes than ever before.
The meals contain healthy fats, protein and slow-release carbohydrates, with no processed foods.
Penny Hunking, Bartlett Mitchell's nutritionist said: "Customers want food facts they can rely on, presented in an inspiring and accessible way, and a combination of print and mobile communications works brilliantly."
Recipe cards have been created so customers are able to recreate the meals at home.
Pete Redman, chef-director at Bartlett Mitchell, added: "I've used easy-to-find ingredients and store-cupboard staples so that customers can cook an awesomely healthy recipe at home."
DARE was refreshed this year to take into account legislation changes from the European Food Safety Authority and the latest food research.
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