When inverting a cake to remove from a Bundt pan, “the cake doesn’t need to drop out of the pan instantly for it to be a success. If the cake doesn’t pop out right away or after you’ve given it a few thunks, just let it sit inverted on a cooling rack for a bit. Check on it again after 10 to 15 minutes.”
Tip from Taste of Home: https://www.tasteofhome.com/collection/bundt-cakes-tips/ 15 Tips for the Best Bundt Cakes Straight from Our Test Kitchen, March 2020