Cook the tortellini

• Bring a large pot of salted water to a boil.
• Cook the tortellini according to the package instructions, then drain.

Heat the sauce and spinach

• Return the pot to the heat and add the pasta sauce, the diced tomatoes with their juices and the frozen spinach.
• Stir and heat through until the spinach has wilted and the sauce is bubbling.

Add the tortellini and cheese

• Add the drained tortellini to the sauce and stir to coat.
• Stir in the grated cheese until melted and season to taste with salt and pepper.