Freezing Sweet Potato Casserole

Can a sweet potato casserole be prepared in advance and then frozen for two weeks? The ingredients I'll be using include butter and milk, and I would like to get a head-start on Thanksgiving, if I can. Thanks

I have frozen mine for a year and it tasted the same!

I was planning on using a graham cracker/brown sugar/butter crumble in mine... will that freeze as well? Should I freeze it simply prepped and not baked, or prepped, then thaw on T-Day, add my marshmallows (no hisses please) and broil til golden?

Thank you, thank you!

Freeze w/o toppings. Take out of the freezer and defrost on the counter (in am) or in the fridge 2 days.

Add toppings then bake. Sweet potatoes stay hot for a while (about 25 mins) after cooking, which frees-up the oven for other uses.