Heat olive oil in a large wide skillet on medium heat. Add the chopped onion, garlic. Stir to coat. Add tomato paste, tomatoes, basil, salt, pepper, then simmer. Optional, season with aromatic herbs as desired.
Put some olive oil, a little bit of tomato sauce in a baking form, and spread it well. Place the still frozen cannelloni in the form. Pour the rest of the tomato sauce over the cannelloni and sprinkle it with small pieces of mozzarella. Bake the dish in a preheated oven (180° C) for about 40 minutes.
Tip: Serve the cannelloni with freshly grated Parmesan cheese.
Good appetite!
Team Koch
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