Bring water bath up to 140 F. If pork chops are sealed, drop them in, or use the water displacement approach and clip to the side. They need at least 1 hour at 140, but can go for 4-5hrs without changing the texture, so better to start early than late on this component.
Slice dried tomatoes into julienne strips and move into a small heat proof dish (e.g. a coffee cup)
Add 1/2 cup of boiling or very hot water until just covered. Let rest.
chop shallot (or onion) fairly small (think close to mince). Mince the garlic. Set both aside.
Bring stock or water to a boil. Whisking as you go, pour polenta into liquid. Turn temperature to low and cover. Stirring about every 5 min. Total cooking time until the grains are soft is about 30 minutes (ie. so make sure your pork has been cooking for at least 30 minutes before you start the polenta).
Heat olive oil in a saute pan. Add shallots until they begin to soften. Add garlic, stirring until fragrant, add tomatoes and soaking water. When water starting to boil, add spinach. When spinach is wilted remove pan from heat.
Optional - you can brown the pork chops in a hot pan (I prefer my cast iron) or with a blow torch (I use this one from Lowes) on a sheet pan (put it on the range or somewhere heat proof).
Mix tomato-shallot-spinach mix into the polenta. Add the ground or shredded parmesan and mix. Add the butter and mix until melted.
Serve about 1/4 on each plate, topped with pork chop. Top with parmesan shreds (e.g. use a vegetable peeler with the cheese block).