Expression.cs

private Setting GetSetting<T>(Expression<Func<T>> expr)
{
    var me = expr.Body as MemberExpression;
    if (me == null)
        throw new ArgumentException("Invalid expression. It should be MemberExpression");
    var func = expr.Compile(); //This converts our expression back to a Func
    var value = func(); //Run the func to get the setting value
    return new Setting(me.Member.Name,value);
}

// Usage
var settings = new List<Setting>();
settings.Add(GetSetting(() => Settings.EnableBugs));
settings.Add(GetSetting(() => Settings.EnableFluxCapacitor));