Brown the Beef: Heat a frying pan over medium-high heat, and add the ground beef. Season it with salt, pepper, and garlic powder to taste. If there's excess grease, drain it off.

Toast the Sesame Seeds: In a dry pan, toast the sesame seeds over medium heat for 3-5 minutes until they turn golden brown. Allow them to cool.

Make the Dressing: In a small bowl, whisk together the mayonnaise, ketchup, finely chopped pickles, pickle juice, and black pepper. Set aside.

Prepare the Greens: Wash and chop the romaine and iceberg lettuces. Use a salad spinner to dry them or pat with paper towels before transferring to a large bowl.

Chop Remaining Ingredients: Dice the plum tomatoes, onions, and sliced pickles. Grate the cheddar cheese.

Assemble the Salad: Divide the chopped lettuces into 4 or 6 serving bowls. Layer each bowl with ground beef, chopped tomatoes, pickles, cheese, and onions.

Drizzle and Garnish: Generously drizzle the dressing over the salads and top with toasted sesame seeds. Enjoy your feast!