@gfweb as I said, I've not used these molds that much for baking until now, mostly to freeze food in it. So I've not encountered this issue ye and only washed with soapy water.
This morning I had 4 little slices of bread: 2 from the CSO bread and 2 from the Cadco bread. 2 slices got toasted in the CSO and 2 slices on my Le Creuset cast iron grill. Half of each slice cooled enough to keep the butter from melting (I like my butter cold on toast) and in one half agrimontana apricot preserve and the other half sprinkled with granulated sugar. Bread, butter and sugar is a typical northern italian snack for kids and after so many years not having this, I'm wondering why not, so delicious. I think my kids never had it!
BTW, call me weird, but while I'm enjoying my little CSO oven for many tasks, toast in there is not my thing. I do prefer my super hot cast iron grill 
