Some cake pans are made in materials that can be slightly toxic when heated.
GLASS DISHES
I've done a little bit of research and found out that you can use oven glass dishes to cook sponges.
I have tried and am really happy with the result!
I butter and spread the glass dishes with flour before pouring the dough. Once the cake is cooked, I let it cool down, turn the dish upside down, tap its bottom and the cake falls down easily.