Heat a grill to medium-high heat and sprinkle the steak with salt and pepper on each side.
Cook for 6 to 8 minutes on each side. Remove the steak from the grill and allow it to rest for 2-3 minutes before slicing thin on the diagonal.
To make the dressing, add the dressing ingredients to a blender and blend until smooth. Set aside.
Sprinkle a little cheese on a tortilla then place it on a skillet over medium heat to melt the cheese. Place the cheese tortilla in a shallow bowl. Top with rice, steak, corn, peppers and onions, and chopped lettuce. Drizzle with the dressing and enjoy!