Creating Homemade Cheeseburger Pie is simple with these step-by-step instructions:

1. Preheat Oven: Preheat your oven to 400°F (200°C).
2. Cook Beef and Onion: In a skillet, brown the ground beef with the diced onion over medium heat. Drain excess grease.
3. Add Seasoning: Season the beef mixture with salt and pepper, and stir in the chopped pickles if using.
4. Prepare Cheese Layer: In a separate bowl, combine the shredded cheddar cheese with the cooked beef mixture.
5. Mix Batter: In another bowl, whisk together the milk, eggs, flour, baking powder, salt, and pepper until smooth.
6. Combine Mixtures: Fold the beef and cheese mixture into the batter until well incorporated.
7. Pour into Dish: Grease a pie dish or a 9-inch round baking dish. Pour the mixture into the prepared dish.
8. Bake: Place in the preheated oven and bake for 30-35 minutes, or until the top is golden and a toothpick comes out clean.
9. Add Toppings: Once baked, remove from the oven and drizzle ketchup and mustard over the top before serving.
10. Cool Slightly: Allow the pie to cool for a few minutes before slicing.

These steps will guide you in creating this delicious Homemade Cheeseburger Pie effortlessly!