Bolognese Stuffed Bell Peppers

Preheat oven to 375 degrees F (190 degrees C).

Heat 1 tablespoon olive oil in a skillet over medium heat. Stir in the carrots and celery; cook and stir until the vegetables are tender, about 5 minutes.

Stir in ground beef and pancetta, and cook until browned and crumbled; drain off any excess liquid, and return to heat. Add marinara sauce, wine, and red pepper flakes, and simmer for 10 minutes. Stir in cream, half of the Parmesan cheese, and rice. Simmer 5 minutes more, or until most liquid has absorbed.