Add the grape tomatoes, shallot, and garlic to a 9x13" baking dish and drizzle with olive oil and season with salt and pepper (to taste). Toss to combine.
Add the Boursin rounds to the baking dish, nuzzling it among the grape tomatoes.
Cover with foil tightly. Bake for 35 minutes.
Meanwhile, cook the pasta according to package directions and reserve ½ cup of the pasta water for the sauce.
Remove the tomatoes and cheese from the oven and add the chopped spinach, stirring in a little.
Cover again with the foil and bake another 10 minutes.
After baking, add the cooked pasta and pasta water and toss well to combine.
Stir in the Parmesan cheese and fresh basil. Serve and enjoy!
Notes
Storage - store any leftovers in an airtight container in the fridge for 2-3 days.