I've been struggling with this for the last couple of hours. I can access and edit the properties of the button, but the onClick.AddListener() function does not work. Here is my code:

GameObject gameObject;
        gameObject = Resources.Load("Prefabs/MenuOption") as GameObject;

        gameObject.GetComponent<Image>().sprite = Resources.Load<Sprite>(option.imgPath);

        Button button = gameObject.GetComponent<Button>();

        // Testing to see if I can change button properties (works)
        ColorBlock colorss = button.colors;
        colorss.highlightedColor = Color.magenta;
        button.colors = colorss;
        
        // This does not work
        button.onClick.AddListener(() => Test(button));
        button.onClick.AddListener(() => { Debug.Log("click"); });

        Instantiate(gameObject, pos, new Quaternion(), GameObject.Find("Canvas").transform);

And here is an instance of the prefab: image

If anyone knows what I'm doing wrong, I would be very grateful.