Chop the onion into small cubes. In a medium size pan over high heat, add the oil. Once the pan is hot, add the onion and saute for 2 minutes while stirring.
Add the tomato paste, sofrito, and saute for 2 minutes while stirring. Add the meat, sazon, adobo, oregano, and ½ cup of water. Break down the meat while it cooks. Finish cooking for 10 minutes. Once the meat is cooked, strain and let it cool.
Prepare the pasta
While the meat cooks, prepare the pasta. In a big stockpot over high heat, add water and salt. Once the water comes to a boil, add the pasta and cook for only 5 minutes*. Then quickly strain the pasta and run it under cold water until the pasta is cold to the touch.
Assemble the canelones
Fill each cannelloni with about 3 tablespoons of the meat filling. Repeat the process until you have filled them all.
Pre-heat your oven to 400°F.
Add all of the pasta sauce to the bottom of a baking pan. Lay each cannelloni on your pan and sprinkle the grated cheese on top. Bake covered for 10 minutes. Uncover and finish cooking for 10 minutes. Serve hot, buen provecho.
Notes
Sauce- This is a red sauce recipe, but you can use a white sauce. My favorite is the cream cheese béchamel.
Pasta- Depending on the manicotti pasta that you get, you can add more or less of the filling. I got the ones with texture on top, which are pretty big. But if you buy the ones that are skinny and smooth on top, you'll need less filling.
Meat filling- I used about 3 tablespoons of filling per cannelloni, and they get stuffed from end to end, but you can get away with adding a little bit more of the meat filling. You can also change the filling. This shredded chicken is a good option.
Serving size- I serve 2 cannelloni per person. So the recipe can yield more or less, depending on how you serve it.
Freezing- You can freeze the canelones. Just stuff them and store them in a freezer bag or an airtight container. Then, when ready to enjoy, you can assemble them in a baking tray.