I have tended to use a simple non-stick baking/cooking spray (canola oil
based). and NO flour. I also recommend letting your product cool to cool
to the touch before even attempting to remove it. if you you a knife, use
the back side (not the edge) to lightly pry the cake out. Don't move it up
and down, but gently slide the knife around, holding tight to the edge.
even better than a knife is a mini-offset spatula.

Charles Baker.