I freeze almost everything. I honestly can only think of a couple of things that won't freeze well and that is lettuce. and some pasta.
I freeze lasagna all the time with the pasta in it of course and it is always just fine.
Beans, vegies, fruits, casseroles, soups, stews, leftover big meals like turkey or roast beef .. like I said .. I freeze most everything.
HOWEVER --- there are a ton of people here who can probably answer your question with more technical details.