In a large skillet over medium-high heat, cook the ground beef until browned and cooked through. Season with salt and pepper to taste. Drain excess fat and set aside.
Prepare the Big Mac Sauce:
In a small bowl, mix together mayonnaise, sugar-free ketchup, pickle relish, white vinegar, onion powder, garlic powder, salt, and pepper. Adjust seasoning to taste.
Assemble the Salad:
In a large mixing bowl or serving dish, combine shredded lettuce, shredded cheddar cheese, diced pickles, and cherry tomatoes.
Combine and Serve:
Add the cooked ground beef to the salad mixture.
Drizzle the Big Mac sauce over the salad or serve it on the side.
Toss everything together gently to coat evenly.
Serve immediately and enjoy your Keto Big Mac Salad!