Preheat the oven to 425 F / 220 C.
Bring a pot of water to a boil. Cook the jumbo shells according to package directions.
If including spinach and/or ground beef, cook the spinach and/or the ground beef.
In a medium bowl, combine the ricotta, spinach/ground beef (if using), and all of the spices.
Pour some of the jarred pasta sauce into a 9x13 baking dish. Spread to coat the bottom.
Drain and place the cooked jumbo shells in the 9x13 baking dish.
Stuff each jumbo shell with some of the ricotta mixture.
Top with the remaining jarred pasta sauce and then the Italian blend cheese.
Bake at 425 F / 220 C for 20-25 minutes, until the cheese has begun to brown.
Enjoy!
