I actually used this to freeze leftovers instead of shape burgers, but it is amazing! The perfect amount of food. I froze chickpea curry to test it out and when I wanted to defrost them I popped out two pucks and put them in a pan on medium heat with a lid overtop. I was impressed! They were so quick to heat up and I just had to break them up once about halfway through. In all it took about 5 minutes from freezer to bowl. And cleanup is so easy too! basically just need to rinse the shape+store out and let it dry. Excited to have these for the school year for meal prep!