Preheat the oven at 350 ˚F, and get a de 10 x 7 x 2” recipient.
Cook the spinach per the instructions on the packet.
In a frying pan, heat the oil at medium.
Add the spinach and stir-fry it for 4 minutes; add the salt and pepper, nutmeg, and heavy cream. Stir well for 2 minutes, and then set it aside from the heat.
Prepare the tortellini, per the instructions on the packet. Drain them well.
Mix the spinach with the milk, and set aside half of the spinach in a bowl.
Add the tortellini on top of the spinach, and add the tomatoes, basil, and the remaining spinach.
Cover the tortellini with parmesan cheese, and bake them for 15 minutes.