Easiest Meatballs

Name: Easiest Meatballs
Ingredients: 3 Tbsp. extra-virgin olive oil, plus more for baking sheet; 2 large eggs; 1½ cup panko (Japanese breadcrumbs) (102g); ½ cup milk; 1½ tsp. Diamond Crystal or ¾ tsp. Morton kosher salt; 1 tsp. garlic powder; 1 tsp. oregano; Freshly ground black pepper; 2 oz. Parmesan, finely grated (about ½ cup), plus more for serving; 1 lb. ground beef (20% fat) or other ground meat; Warm homemade or store-bought tomato sauce and torn basil leaves (for serving)