how do i make it hard?

So my bake fest went very well. I watched my holiday movies and baked lots of goodies. I baked 15 small loaves of Zuchini and pumpkin breads, two large loaves of Zuchini and I still have a few more batches that I will whip up tomorrow night so it will be fresh when I take it home to my mom. But, there was a slight problem with my toffee. You see, I made this new recipe....well, this morning when i went to go do my taste test the shit was kinda soft....not like it should be. I am so frustrated! It has good flavor, but I don't know how to make it hard! hehe If anyone has any tips for making it hard, please feel free to let me know. I am puzzled...

I'm off to deliver the baked goods now....