In a large skillet, heat the olive oil over medium heat. Add the chopped onions and cook until they soften, about 3-4 minutes. Add in the ground beef, breaking it apart and cooking until browned, seasoning with salt and pepper to taste.
Sprinkle the flour over the browned beef and onions, mixing it well. Gradually stir in the beef broth and Worcestershire sauce, allowing it to thicken.
Lower the heat and gently stir in the sour cream, letting the flavors meld together.
Pour the mixture into a greased baking dish and spread it evenly.
Bake in the preheated oven for about 30-35 minutes or until bubbly and golden around the edges.
Sprinkle with fresh parsley or chives before serving and enjoy with mashed potatoes or rice.
Notes
A hearty meal that embodies comfort and nostalgia, perfect for busy nights and family gatherings.