Heat olive oil in a small stock pot over medium heat. Add onion, thyme, rosemary, and garlic to the pan and sauté 5 minutes. Stir in salt, pepper, and tomatoes; bring to a simmer. Remove from heat.
Place half of beans in a large bowl; mash with a potato masher until chunky. Add remaining half of beans, pork, and sausage; stir well. Place half of bean mixture in an electric slow cooker; top with half of tomato mixture. Repeat layers. Cover and cook on LOW for 5 - 6 hours. Ladle into bowls. Sprinkle with Parmesan cheese and parsley.