1. 1. Cook the spaghetti according to package instructions until al dente. 2. In a large skillet, sauté the sweet onion, garlic, and cherry tomatoes until softened. 3. Add crushed tomatoes and canned chopped tomatoes to the skillet, along with fresh thyme and rosemary sprigs. Let it simmer for 10-15 minutes. 4. Toss the cooked spaghetti in the tomato sauce mixture. 5. Top with grated cheddar cheese and parmesan cheese before serving.