For The Quick Pickled Red Onions
Put the onion in a small bowl and pour in enough red-wine vinegar to cover well. Set aside for at least 30 minutes.
For The Salad
Combine the lettuce, tomatoes, in a salad bowl. Wait to peel and cube the avocado until ready to serve.
In a small bowl, whisk together 2 tablespoons of the red-wine vinegar from the onion marinade, 2 tablespoons of olive oil, and salt and pepper to taste. Set aside until you are ready to dress the salad.
For The Chipotle Glazed Skirt Steak
Note: Whether using a grill or a skillet stove top, cooking times will be the same.
Combine the ketchup, honey, chipotles, adobo sauce, and 1 teaspoon salt in a blender, chopper or food processor. Purée and set aside.
Preheat a grill to medium-high for 10 minutes or preheat a grill pan or skillet over medium-high heat. Brush the grill grates or grill pan with the remaining tablespoon of oil.
Season the beef on both sides with Southwest Spice Blend, (or salt and pepper) Grill the meat for 4 minutes, turn over, and brush the glaze over the steak. Grill for another 4 minutes, turn over, and glaze the other side. Allow the meat to cook for another 2 minutes on each side to caramelize the glaze. Remove from heat, tent with foil and allow the meat to rest for 5 minutes. Slice the meat against the grain in ½-inch-wide strips.
Pour the dressing over the lettuce mixture and toss well. Place the sliced beef over the salad and top with cheese crumbles and marinated red onions. Peel, pit and cube the avocado just before serving.