Soggy pineapple upside-down cake can be frustrating, but the good news is that there's an easy fix. Excess moisture from the pineapple slices and cherries can often be the culprit. To avoid this, make sure to fully drain the can of pineapple slices and blot them dry with a paper towel. You can also use fresh pineapple slices instead and pat them dry. This will ensure that your cake has the perfect texture and isn't soggy.