Cook the ground beef in a skillet over medium-high heat until browned and crumbled.
Drain any excess fat from the skillet.
In a large bowl, combine the cooked ground beef, shredded lettuce, diced tomatoes, diced onions, shredded cheddar cheese, diced pickles, and Big Mac sauce.
Toss to coat everything evenly.
Top with croutons and serve immediately.