Cake release, also known as cake goop, is kind of a bakery secret. Ever have a cake stick in the pan even though you sprayed an entire can of cooking spray before baking? You could brush butter, then coat with flour. That will definitely do the trick, but then you may have a coat of flour on the outside of you cake, not to mention the mess involved in the process. Cake release is a mixture of equal parts shortening, oil, and flour, used to coat any baking pan before filling with batter. I always keep a jar of it on hand, ready to use to coat any baking pan. It kind of seems like magic when my cakes just slide right out of their pans.
The recipe is equal parts oil, vegetable shortening, and flour. I add 1 cup of each into the bowl of my mixer and beat until smooth. It takes a bit of time to work out the lumps but it’s necessary. Once smooth, store your cake release in a jar or container until ready to use. It can be stored at room temperature for a few months. I use mine all the time, so it never lasts that long.
To use, just take a pastry brush and coat your entire pan. Easy peasy! Hope this helps take your baking to the next level!