The Steam Fairy brought me a CSB the other day. It seems very happy atop the BSO.
Lots of fooling around to follow.
Onion quarters cooked at 350 F "super steam" for 5, 10, 15 and 20 minutes. 5 min was just cooked, 10' softer with a little texture still, 15' sweeter and soft, 20' too soft. Not much browning. Higher temp needed?
I tried to brown onions at the same setting. Was slower than stovetop and took a lot of stirring.
Brussels sprouts at 350 F, super steam at 10, 15 and 20 min.
10 was al dente, 15' just right and nicely browned, 20' mushy