Another separation of concerns that's possible:

MyView.js

var MyView = Backbone.View.extend({
  initialize: function() {
    this.render();
    this.model.on('change', this.update, this);
  },
  render: function() {
    //Puts el on page, called ONLY once, by init
  },
  update: function() {
    this.$el.html( /* Some template */ )
  }
});