Begin by boiling your tortellini noodles until they are al dente (aka ready). Follow the directions on the package for boiling time.
While the tortellini is boiling, roughly chop the spinach.
Heat a large skillet using medium heat and put the two minced garlic into it. Saute it briefly until fragrant, about thirty seconds or so.
Add into the skillet the petite diced tomatoes (undrained), spinach, salt, pepper, dried basil, and onion flakes.
Cook and stir over medium high heat until the mixture begins to bubble.
In another bowl, combine the flour and half-and-half. Whisk until fairly smooth.
Add the creamy mixture into the the skillet along with the Parmesan cheese.
Heat through and reduce the heat to medium low and continue to stir and cook until it thickens, about 5 minutes.
Add the drained tortellini and mix together gently.
Serve and enjoy!