Add the feta cheese with spinach in the food processor and blend well until creamy. Add 1-2 tablespoons of water if needed to process.
Start stuffing the cannelloni using a spritz or a teaspoon. Stuff them until they’re full.
Spray an oven tray with some olive oil.
Place the cannelloni in the oven tray.
In another bowl, add tomato paste, peeled & chopped tomatoes, basil, oregano, salt, pepper, and basil. Mix well and pour over the cannelloni in the tray. Spread evenly.
Add some water in the tray; not much, just a little, about 1/4 cup.
Cover with aluminum foil and place in the oven at 180C (392F)
Cook for about half an hour then serve!