Prepare the Meatball Mixture
In a large mixing bowl, add ground beef, uncooked rice, egg, chopped onion, garlic, cilantro, salt, pepper, and cumin. Gently mix everything together until just combined. Avoid overmixing, as this can make the meatballs dense. Shape the Albondigas Meatballs
Using your hands, roll the mixture into small, evenly sized meatballs (about 1 to 1½ inches wide). Place them on a plate while you prepare the soup base. Add Soup Base to Crock Pot
Pour the beef broth into the crock pot. Stir in salsa or crushed tomatoes, oregano, and a pinch of salt. This forms the flavorful base for your albondigas soup. Add Vegetables
Add the diced potatoes, sliced carrots, and zucchini directly into the crock pot. Spread them evenly so they cook properly during slow cooking. Add Raw Meatballs
Carefully place the raw meatballs into the broth, spacing them out so they don’t stick together. Do not stir aggressively—gentle placement helps the meatballs stay intact. Slow Cook the Soup
Cover the crock pot and cook:LOW for 5–7 hours (best flavor and texture), orHIGH for 3–4 hoursDuring cooking, the rice inside the meatballs will cook fully and absorb the broth, making them tender and juicy. Taste and Adjust Seasoning
About 30 minutes before serving, gently stir the soup and taste the broth. Adjust salt or seasoning if needed. Serve and Garnish
Ladle the hot albondigas soup into bowls. Garnish with fresh cilantro and serve with warm tortillas, lime wedges, or crusty bread.