core/app/Providers/AdminProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;

class AdminProvider extends ServiceProvider
{
    /**
     * Bootstrap the application services.
     *
     * @return void
     */
    public function boot()
    {
        // create instance of main menu
        \Menu::create('mainMenu', function ($menu) {
            /**
             * @var $menu \Pingpong\Menus\MenuBuilder
             */

            // create menu entries

            /*
             * WARNING: MenuBuilder::route() does not seem to work,
             * nor route() helper function. We need to use action() helper instaed.
            */
            $menu->url(action('Admin\\Dashboard@getIndex'), trans('admin/mainMenu.dashboard'));
        });

        // create menu with user profile
        \Menu::create('profileMenu', function ($menu) {
            // @todo add profile menu
        });
    }

    /**
     * Register the application services.
     *
     * @return void
     */
    public function register()
    {
    }
}