First, you are not likely seeing anything in Dashboard. I think you are referring to the "Dock" which is the line of icons across the bottom of your screen. (Or either side)
The Dashboard is only accessed by clicking on the round black symbol that looks like a gas gauge second from the left IN the Dock.
When you close the window with Toast while burning, don't close it with the red dot, rather minimize it with the yellow dot and it will minimize itself in the dock. (Watch where it goes when you click the yellow dot.) A simple click on the miniature file in the dock will bring it back to the desktop so you can see the progress of your burn.
That is the only thing I can think of to help you.