In a mixing bowl, combine ground beef, ground pork, breadcrumbs, egg, garlic, cumin, oregano, salt, and black pepper. Mix until just combined.
Form the mixture into small meatballs and set aside.
Heat olive oil in a large skillet over medium-high heat. Brown the meatballs on all sides, then remove and set aside.
Blend the chipotle peppers, crushed tomatoes, and chicken broth until smooth.
Pour the sauce into the skillet and bring to a simmer.
Return the meatballs to the skillet, cover, and let simmer for 20 minutes until fully cooked.
Garnish with fresh cilantro and serve with rice or tortillas.