Yes, absolutely you can freeze aguapanela. Freezing aguapanela can be a great method of preservation, especially if you've made a large batch and want to store it for future use. You can pour the aguapanela into ice cube trays or freezer-safe containers and freeze them. The frozen cubes or portions can then be used as and when required. Also, if you're planning to serve aguapanela as a refreshing cold drink on a hot day, popping a couple of aguapanela cubes in the glass would cool the drink down just right.