In a large skillet, on medium heat, cook the ground beef until completely cooked through (there should be no pink). As the meat cooks break into smaller pieces.
Turn heat to low. Add diced dill pickles and yellow onion. Stir the diced pickles and yellow onions into the ground beef mixture to make it evenly mixed.
Mix together the thousand island dressing and mayo to make the copycat McDonald's secret sauce.
Mix in the thousand island dressing mixture into the ground beef, onion , and pickle mixture. Stir until well combined. Add salt and pepper, to taste. Stir in shredded cheese. Mix until cheese is completely melted. Remove from heat.
Prepare a sesame seed bun, toasted or not, with shredded ice burg lettuce. On the bottom bun, add copy cat big mac mixture.
Notes
Prep the vegetables before cooking the ground beef. The whole cooking process goes quickly once started.
You can use just A Thousand Island dressing but combining it with the mayonnaise tastes really great.
Use ground turkey instead of ground beef for a leaner meat.
Use a gluten free bun to make it a gluten free meal.