Combine ground meat, bread crumbs, egg, salt and pepper until fully integrated. Shape into small meatballs (about the size of a golf ball). Reserve.
Heat oil in a deep pot over medium heat. Add the Molli Morelos cooking sauce mixture and cook for 5 minutes.
Add meatballs one by one, cover and cook under medium heat for 15 minutes or until fully cooked. Meanwhile, warm the rice, beans and tortillas.
To make each meatball taco: Cut each meatball in 3-4 pieces about ½” wide. Spread a tablespoon of rice over the center of the tortillas. Top rice with refried beans, meatball pieces, and a spoonful of the sauce. Roll up. Provecho!