Ever opened your jar or container of brown sugar and all you see are large clumps. It can be a bummer especially when those clumps are as large than your cup and you’d probably need a jackhammer to loosen them up to the grains that you’d expect from, well, sugar.
A quick fix? Place the sugar in a microwavable container and place a slice of bread in the container on the sugar. Seal the container tightly and microwave for 15 seconds. The moisture from the bread will raise the pressure in the container and the steam will soften the sugar and you can now easily work on the clumps. A half an apple can also work as substitute for sliced bread.