Prep. Preheat the oven to 375°F. Lightly grease a 9-inch pie dish or a similar-sized baking dish.
Cook the bacon. In a large skillet over medium heat, cook the chopped bacon until crispy. Once done, remove it from the skillet and set it aside on a paper towel-lined plate. Keep a small amount of the bacon drippings in the pan for extra flavor.
Cook the ground beef. In the same skillet, add the ground beef and diced onion; cook it over medium heat until it is browned, breaking it up with a spatula as it cooks. Once the beef is cooked and onion is softened, add the minced garlic and cook for another 30 seconds.
Season. Stir in the Worcestershire sauce, salt, and pepper.
Transfer it to the pie dish. Return ⅔ of the cooked bacon to the pan, setting aside the rest for garnish. Transfer the meat mixture to the prepared pie dish and sprinkle the shredded cheese evenly over the top.
Prepare the crust batter. In a medium bowl, whisk together the Bisquick, milk, and eggs until smooth. Pour the batter over the meat and cheese in the pie dish, ensuring it covers the entire surface.
Bake. Pop it in the oven and bake for 25-30 minutes or until the pie is golden brown and a knife inserted into the center comes out clean.
Let it rest. Remove the pie from the oven and let it cool for 5 to 8 minutes before slicing.
Serve. Top with the remaining bacon and optional burger toppings like mustard. Cut it into wedges, garnish with fresh parsley, and enjoy!