That's as far as I got before I panicked and begging for help. My brother was kind enough to tear himself away from burlesque dancers (well, for seconds at a time since he was texting me) to help me talk myself through this.
But doesn't this pile of nectarines and rhubarb look delicious?? Brother assured me that I could use my porcelain-covered cast iron pan safely, told me what temp to use since I didn't have a recipe (box said 450 for biscuits but no cobbler recipe, he said 425? Was going to turn up to 450 but forgot so I stuck to 425) and said my recipe as I remembered from watching my aunt last summer sounded good, so I dumped in the fruit, took a deep breath and jumped in head first.
I drizzled the biscuit dough over the fruit. Took one handful of about 1/4 cup of sugar and sprinkled it over the dough and along the edges where I could still see fruit. Since that amount looked like WAY too much to me and covered everything, I didn't even use the rest of the sugar. Then poured on boiling water.
SUPER blurry picture, entering the oven.
45 minutes later...
Not too sweet, with a nice crunchy top with fluffy cobbler dough underneath and gooey fruit. Mmmmmmmmmm MM!