If you've made fudge, then you should have no trouble with this because it reaches the same consistency as regular fudge during cooking.
Oh, and this is my celebratory "I did good on my new job today" recipe post.
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Editing to say I only just noticed the level of difficulty is set to Easy, but I know I selected Medium when I posted this (and it is a medium sort of cooking effort). I'd rather not go back and edit it, though, as I'm loath to have to reset everything through the recipe interface just to get all on single lines and so on.