So the first task was to grate some cheese. Ok, grate a lot of cheese.
Then, I made the bechamel. It was hardly a traditional sauce, as I went for the kind with an egg in it, and you're supposed to just use the yolk, but I didn't have any immediate uses for egg whites, and I hate wasting food, so I just beat the whole egg and used that. I also put a bunch of garlic in the sauce. It made everything taste garlicky, which was a good thing. And the final change was that I didn't add any nutmeg - I didn't have any.
Bechamel (Alex's version...)
Made ~3/4C?
2 tbs butter
2 tbs flour
~3/4C milk
1 egg
salt and pepper to taste
1 clove garlic, minced.
Mince the garlic. Melt the butter in a saucepan (or frying pan, if you're me). Once its melted, add the garlic, and cook that for just a little bit until it smells delicious. Add the 2tbs of flour all at once, and whisk until its smooth. It should be a thick paste-like substance now, with a couple lumps of garlic. Add the milk, and whisk some more. The milk thins things out, but then you cook it for another couple minutes (less than 5), and it thickened up again. Take it off the heat, and season with salt and pepper, tasting.
In a separate bowl, beat the egg. Add a little (~1/4C) of the hot bechamel to the egg to temper the egg, then add the egg-bechamel sauce back to the larger quantity of it. Whisk some more. Done! Set aside until you're ready for it.
Meanwhile, spread your salmon pate (or ham, if you're being all traditional - I think ham would have been better in this position than salmon pate, honestly) on one side of the bread. Mustard would be good here, too. Put some cheese on the other half, and close into a sandwich. I ended up taking off some of the cheese shown here, because I ended up making two sandwiches, and didn't feel like grating more cheese, so had to share the cheese.
Butter a baking dish, and put your sandwich(es) onto it. Spoon the bechamel over the top, nice and thick and gloopy. Top with more grated cheese, and bake for ~15 minutes at 400F.
Leftovers heat up nicely in a toaster oven, to get that crunchy crispy cheesy top again.