Handlebars.registerHelper('unescape',function(str){
return str.replace(/\\"/g,'"'); // replace all \" to "
});
Usage example:
<div class="panel panel-default">
<div class="panel-heading"><h3 class="panel-title">Description</h3></div>
<div class="panel-body">
{{unescape description}}
</div>
</div>