You may want to create a global helper like:
Template.registerHelper('formatDate', function(date) {
return moment(date).format('MM-DD-YYYY');
});
Then you can use it like:
{{#each vname}}
{{formatDate date}}
{{/each}}
This solution depends on moment which is a handy date manipulation library. If you prefer to produce the string without using moment, there are a number of answers for this including this one.