01 - Preheat the oven to 425°F. Line a baking sheet with parchment paper and set aside.
02 - Bring a large pot of salted water to a rolling boil. Add the baby potatoes and cook for 12–15 minutes until fork-tender. Drain well and let cool slightly for handling.
03 - Arrange the boiled potatoes on the prepared baking sheet. Using a flat spatula or the bottom of a glass, gently press each potato to flatten it into a smashed disk. Drizzle generously with olive oil and sprinkle with garlic powder, smoked paprika, salt, and black pepper.
04 - Roast the smashed potatoes for 18–22 minutes, flipping halfway through, until golden brown and crisped on the edges. Remove from the oven and set aside.
05 - While the potatoes roast, combine the ground beef with salt, black pepper, and Worcestershire sauce in a mixing bowl. Mix gently and form into 4 equal, loosely packed balls. Avoid overworking the meat to keep it tender.
06 - Heat a large skillet or griddle over medium-high heat until smoking hot. Working in batches if needed, place the beef balls onto the hot surface and immediately smash flat with a sturdy spatula. Cook for 2–3 minutes per side until a deep brown crust forms and the patties are cooked through. Remove and set aside.
07 - In a small bowl, whisk together the mayonnaise, ketchup, yellow mustard, pickled relish, apple cider vinegar, garlic powder, onion powder, and paprika until smooth and well combined. Season with salt and pepper to taste.
08 - Divide the crispy smashed potatoes among 4 serving bowls. Layer each with shredded iceberg lettuce, diced tomato, sliced red onion, dill pickle slices, and shredded cheddar cheese. Crumble or slice the cooked burger patties over each bowl and drizzle generously with the special sauce.
09 - Serve immediately while hot and enjoy at the peak of crispiness.