Hi! I'm making a round 14' cake and wanted to find out what I can do to make sure it cooks all the way. I don't want it to not cook in the middle. Any tips? Thanks

AA few greased flower nails upside down spaced evenly towards the middle of the pan with the batter poured around them will promote even baking.

perfect! Thank you so much. That is what I do when I bake the 12" but i only use one. So maybe use 2 or 3 for a 14"?

I would use 3 flower nails (or the Ateco heat core nails)  for a 14" cake - in a triangle configuration equally spaced out as much as possible.  I also  use  bake even strips around the outside of the pan so the outside edge doesn't cook too fast, and lower the  baking temperature.  HTH.  

thank you so much for the tips