Heat the oil in a large nonstick skillet over medium-high heat. Add in the roast beef, stir once and let the meat brown, about 2 minutes, and stir again. Add in the BBQ sauce and simmer for 5 minutes.
Layer the shredded cheese on top of some tortilla chips on a large platter. Pour the piping hot meat over the cheese and then top with the crispy onions, cherry peppers and dollops of the Honey Horseradish Crema.
Honey Horseradish Crema:
Mix the sour cream, horseradish, honey, mustard and salt in a bowl. Let the crema sit for 20 minutes before serving.