Crock Pot Meatballs with Creamy Mushroom Gravy

Name: Crock Pot Meatballs with Creamy Mushroom Gravy
Prep time: 15 min
Cook time: 4 h
Total time: 4 h 15 min
Cuisine: American
Ingredients: 2 pounds lean ground beef; 2 large eggs; 2/3 cup dry bread crumbs; 2 teaspoons garlic powder; 1 teaspoon onion powder; 1 teaspoon salt; 1 teaspoon black pepper; 1 pound whole cremini mushrooms; 1/3 cup grated white onion; 3 tablespoons salted butter; 2 teaspoons minced garlic; 3 cups beef stock; 1 tablespoon Worcestershire sauce; 3 tablespoons cornstarch; 1/2 cup whipping cream; Salt and pepper to taste; 2 tablespoons chopped parsley (if desired); Mashed potatoes for serving