Begin by preheating your oven to 375°F (190°C). While it's heating, heat a large skillet over medium heat and add the ground beef. Cook for about 6-7 minutes, breaking it up with a spatula until it’s browned and no longer pink. Drain excess grease and season with salt, pepper, garlic powder, and onion powder.

Incorporate the flavors of a burger by mixing ketchup, mustard, and mayonnaise into the cooked beef mixture. If you’re using them, add diced onions and pickles. Stir until all ingredients are well combined.

Grease a 9x13-inch baking dish and evenly spread the frozen French fries across the bottom. Pour the beef mixture over the fries, spreading to cover them completely.

Sprinkle a generous layer of shredded cheese across the top of the beef and fries. Place the casserole in the preheated oven and bake for 25-30 minutes, until the cheese is melted and bubbly.

Once baked, carefully remove from the oven and let cool for about 5 minutes. Garnish with chopped parsley before serving.