Relocating even a little further from where you do your toasting can make a difference. My detector is over the dinette, about 8 feet diagonally from the toaster on the kitchen counter, and it doesn't go off. But I may not toast as dark as you do.
If I put the toaster on the dinette table, it will set off the smoke alarm, so that's where I plug in the teakettle instead.
Charring bread produces exactly the combustion products an ionization smoke detector needs to catch a house fire in its early stages. You can sometimes fill a room with particle smoke from hot grease without setting one off, but lighting one wooden match in the room should be enough to do it.