1) Decide to have chili mac for dinner, so ask husband to get chili out of the freezer. This step is key.
2) Start defrosting the container you assume contains chili.
3) Begin making mac & cheese as usual (yes, it's out of a box. sue me.)
4) Upon reaching the stage of adding the chili, dump the contents of the freezer container without ever seeing what they actually are.
5) Realize the mix-up when what you've dumped into the pasta HAS NO BEANS.
6) Go for broke and add the sorts of spices you'd add to any pumpkin or squash dish.
I think it's actually quite edible, even though it's not at all what I had in mind. Since Josh dislikes winter squash he's not so happy, though... I think I owe him a salmon dinner tomorrow night!