In the bottom of your best soup pot, heat up your olive oil and add the sausage, onions and peppers. When the sausage is almost completely cooked, add the garlic and the pesto (or herbs). Let it cook another minute, then add the tomatoes and tomato sauce, frozen vegetables and beans. Let this cook for about 10 minutes on medium heat. Then add your beef stock and bring back to a gentle boil and then add the macaroni. Salt and pepper to taste. If you like it spicy, you might also add a pinch of red pepper flakes. Cook another 10 minutes.