In a large pot or Dutch oven set over medium high heat cook your meat and onion until the meat is completely cooked through and the onion is softened. Be sure to break the meat apart with a wooden spoon as it is cooking.
250 grams (9 oz, or 1/2 lb) ground veal, 250 grams (9oz, or 1/2 lb) ground pork, 1 cup onion
Move your meat and onions to the sides of your pot (so that you have an empty space in the center) and to the center add the olive oil, bay leaf and tomato paste. Stir the tomato paste continuously and cook for 1 minute. After the 1 minute, mix everything together.
2 tbsp ( 30 mL) olive oil, 1 bay leaf, 2 tbsp tomato paste
Add the garlic and zucchini and cook for 3-5 minutes, stirring regularly.
3 garlic cloves, 1½ cups zucchini
Add the passata (or tomato sauce or marinara sauce) and the salt and pepper. Reduce to a simmer and cook for 10 minutes. Remove the bay leaf and discard.
5 cups (1,250 mL) passata, 1 tsp salt, ½ tsp pepper