Been cooking in cast iron DO's for near 40 years now, the wife and I have probably trained 300 plus BSA and Canadian scout leaders in DO cooking, theres no real secret to it, whatever you cook at home or find in a cookbook can be made in a DO, one of the best things you can do for your oven when new is deep fry in it the first half dozen times you use it,helps drive that oil into the pours of the cast and gives it a head start on building up that nice oil layer, I tell folks to make doghnut holes or fry bread the first 3 or 4 times,then switch over to chicken or whatever.
Doughnut holes are simple, cheap canned biscuits, seperate and quarter each one, drop in the oil and fry till the edge is golden, tap it with a spoon and it will flip to fry the other side, remove and drain for a minute then drop in brown paper bags of cinammon sugar, white sugar, or powdered sugar and shake, problem is the kids eat em as fast as you can make them, kinda fun watching them trying to eat them while there still nuclear hot!.
some alternatives to the monkey bread, melt some butter or margarine, mix in the cinammon sugar, or maybe some orange or lemon zest and sugar, try some garlic, herbs and parmasgane cheese, great with pasta and sauce, no need to roll the dough into balls, just seperate, dredge in the butter mixture, drop into a bundt pan and then into the do, fill then pan 2/3 full and bake, when finished, invert and eat!
Ive found the best way to learn to cook in the DO is use it at home on the weekends, especially in the summer, make some roasts or stews or whatever, no need to heat up the house and helps to polish your skills.Matter of fact, this weekend coming up is our clubs rondy, Ill be digging out my Lodge 24" deep and makn elk, deer and buffalo and moose stew for the staff on Sun , will feed approx 60 people out of it. Hope this helps, if you have any questions and I can be of service, drop me a PT, Beav