Preheat the oven to 350°F, and line a 9×5-inch loaf pan with parchment paper.
Heat the oil in a skillet and saute the onions and garlic for 5 to 7 minutes, or until softened and fragrant.
Allow the onions and garlic to cool and transfer to a bowl. Add the hambruger, Italian sausage meat, lemon zest and juice, milk, egg and bread pieces. Mix together well.
Sprinkle the cheese over the mixture, add the Worcestershire sauce, salt and papper, and blend. At this point, you will probably have to do it with your hands.
Form a log shape with it, and place it in the prepared loaf pan.
Bake for 50 to 60 minutes, until cooked all the way through.
Let the meatloaf rest for 5 to 10 minutes before slicing.