I got a casserole dish for xmas, what should I cook in it?

I have never used a casserole dish before. It's a nice big one, 4.25 quart. I think I want to use it to cook Sunday lunch/ dinner every week only I am not sure what or how to cook in it. I have a family of four, both children are 4 and under. I guess I am looking for pot roast recipes, casserole recipes, things that I can cook veg and meat together, like chicken and dumplings (don't know how to make that either). Oh, and I am not American. My husband is and I would like to cook some good American food for him.