re: How To Get Smooth Butter Cream that Stands up to Heat and Humidity

Do you think I can 1/2 the shortening and butter and add 8oz of cream cheese for a cream cheese flavored buttercream? That’s what I make the most and I have a crusting recipe, but I notice when I refrigerate it and cover it in fondant it still gets soft. I’d love to use this in a cream cheese version. Thanks in advance for your advice.