01 - Preheat the oven to 400°F.
02 - Heat olive oil in a large skillet over medium heat. Sauté onion, carrots, celery, and garlic for 5 minutes until softened.
03 - Add ground beef and cook, stirring, until browned.
04 - Stir in tomato paste and cook for 2 minutes. Add chopped tomatoes, oregano, basil, bay leaf, salt, pepper, red wine, and sugar.
05 - Simmer uncovered for 20-25 minutes, stirring occasionally, until sauce thickens. Remove bay leaf.
06 - Cook pasta in large pot of salted boiling water until al dente. Drain and set aside.
07 - In a large mixing bowl, combine cooked pasta with Bolognese sauce.
08 - Transfer mixture to lightly greased 9 x 13 inch baking dish. Sprinkle mozzarella and Parmesan evenly over top.
09 - Bake for 15-20 minutes, until cheese is golden and bubbling.
10 - Let rest for 5 minutes before serving.