@model proj.ViewModels.AddMenu
@using(Html.BeginForm())
{
@Html.AntiForgeryToken()
@Html.TextBoxFor(x=>x.Menu.MenuName)
@Html.TextBoxFor(x=>x.MenuItem.MenuItemName)

  <input type="submit" />
}

public class AddMenu
{

    public Menu Menu { get; set; }
    public MenuItem MenuItem { get; set; }
}