Home › Home & Kitchen › Kitchen & Dining › Storage & Organization › Canisters & Jars How to Keep Brown Sugar Soft Published: July 9, 2026 · Updated: July 9, 2026
Brown sugar hardens when the moisture in its molasses dries out, so keep it in an airtight container with a moisture source — a soaked terracotta disc, a slice of bread, or an apple wedge. To rescue a hardened block, microwave it under a damp paper towel in short bursts, or seal it overnight with a slice of bread to draw the moisture back in.
Recommended Store airtight with a terracotta disc, bread or apple; soften a hard block in the microwave under a damp towel, or overnight with bread — Brown sugar is white sugar coated in molasses, and it stays soft only while that molasses holds its moisture — expose it to air and the moisture evaporates, the sugar crystals lock together, and it sets into a brick. The fix for keeping it soft is an airtight container (not the torn, half-open bag) plus a small source of humidity inside it. A terracotta 'brown sugar bear' or disc, soaked in water and dried off, is made for this and lasts for months; low-tech alternatives work just as well — a slice of fresh bread, a couple of marshmallows, or a wedge of apple sealed in with the sugar keep it pliable, though swap perishable ones out every week or so before they spoil. If your sugar has already gone hard, you have a fast fix and a slow one. Fast: put the sugar in a bowl, lay a damp paper towel over it (or add a slice of bread), cover, and microwave in 15–20 second bursts, breaking it up between each, until it's soft — but use it right away, because it re-hardens as it cools. Slow and gentle: seal the hardened sugar in a container with a slice of bread or an apple wedge and leave it a day or two, and it will soften on its own as it absorbs the moisture. A very hard lump can also be warmed in a low oven, then broken up while warm.
