Example of how to manage embedded views with Backbone.js

gistfile1.js

Layout = Backbone.View.extend({
        initialize: function() {
            var me = this;

            this.setViews(_.extend({}, this.views, this.options.views));

            if (this.options.template) {
                this.template = this.options.template;
            }

            if (this.options.menu) {
                this.menu = this.options.menu;
            }

            this.templateContext = _.extend({},
                this.templateContext,
                this.options.templateContext
            );
        }

        , setViews: function(views) {
            this.views = _.extend({}, this.views, views);
        }

        , views: {}

        , render: function() {
            console.log(this.templateContext);
            var t = Mustache.to_html($(this.template).html(), this.templateContext);
            this.$el.html(t);

            _.each(this.views, function(view, key) {
                this.$el.find(key).html(view.render().el);
            }, this);

            return this;
        }
});