Carne Asada con Rajas

Name: Carne Asada con Rajas
Ingredients: For the Carne Asada; 1/3 cup olive oil; 1/4 cup soy sauce; 1/4 cup fresh lime juice; 4 to 5 cloves garlic, peeled; 3 tablespoons dark brown sugar or Mexican brown sugar; 2 teaspoons pepper; 1 tablespoon ancho chili powder; 2 teaspoons cumin, plus more for sprinkling on the steak before you grill it; 1 tablespoon Mexican oregano; 2 tablespoons cilantro; 1 1/2 to 2 pounds flank steak; Mesquite charcoal or chips, or grill pan; For the Rajas; 2 tablespoons olive oil; 2 large onions, peeled, halved, and cut into 1/4-inch thick slices; 8 medium poblano peppers, roasted, peeled, stemmed, seeded, and cut into 1/2-inch thick strips (note: If you would like a little more heat, leave some seeds.); 2 cloves garlic, finely chopped; 1/2 teaspoon Mexican oregano; 1/2 cup crema Mexicana or heavy cream; Salt and freshly ground black pepper; Cotija cheese for garnishing; Chopped cilantro for garnishing; Lime wedges for serving