Enchilada Meatballs

Name: Enchilada Meatballs
Ingredients: 1 lb. grass fed organic ground beef grass fed organic ground beef; 1/2 c. bread crumbs; 1 egg; 2 cloves garlic, minced; 2 tbsp. freshly chopped cilantro, plus more for garnish; 1 tsp. chili powder; 1/2 tsp. ground cumin; 1/2 tsp. dried oregano; Kosher salt; Freshly ground black pepper; 2 tbsp. extra-virgin olive oil; 1 small onion, chopped; 1 jalapeño, minced; 1 (19-oz.) can enchilada sauce; 1/2 (15-oz.) can black beans, drained; 1 c. sweet corn; 1 c. shredded cheddar; 1 c. Monterey jack; 1 avocado, sliced; Tortillas, for serving (optional); Sour cream, for serving (optional)