Heat oil in a large skillet over medium-high heat. Add onion and garlic; cook and stir until onion is almost soft.

Reduce heat to medium; stir in condensed soup, milk, and Worcestershire sauce. Add meatballs; simmer on low heat, covered, until tender.

Meanwhile, bring a large pot of lightly salted water to a boil. Add noodles and cook, stirring occasionally, until tender yet firm to the bite; drain.

Add sour cream, salt, and ground black pepper to meatballs in sauce. Cook until flavors combine.