Step 1: Preheat the Oven
Preheat your oven to 400°F (200°C). This ensures the pie bakes evenly.

Step 2: Cook the Beef and Onions
In a skillet, heat olive oil over medium heat. Add the ground beef, onions, and salt. Cook until the beef is browned and the onions are soft, about 8–10 minutes. Drain off excess grease, then stir in Worcestershire sauce and cook for another 2 minutes.

Step 3: Prepare the Pie Dish
Lightly grease a 9-inch pie dish with cooking spray. Transfer the beef mixture into the dish, spreading it out evenly.

Step 4: Make the Batter
In a mixing bowl, whisk together the eggs, buttermilk, and melted butter. Add in the flour and baking powder, and mix until the batter is smooth.

Step 5: Assemble the Pie
Pour the batter evenly over the beef mixture in the pie dish. Sprinkle shredded cheddar cheese on top.

Step 6: Bake
Bake in the preheated oven for about 25 minutes, or until the top is golden brown and the center is fully set.

Step 7: Serve
Let the pie cool slightly before slicing. Serve warm with your favorite burger toppings like ketchup, mustard, or pickles.