Skirt Steak Tacos with Roasted Tomato Salsa

Name: Skirt Steak Tacos with Roasted Tomato Salsa
Prep time: 15 min
Total time: 15 min
Cuisine: American, Mexican, Latin American
Ingredients: 8 (6-inch) flour tortillas; 1 ½ lb(s) skirt steak; 2 Tbsp canola oil; Salt and freshly ground black pepper; ½ head romaine lettuce, thinly shredded; 1 medium red onion, thinly sliced; 1 ripe avocado, peeled, pitted, halved and diced; Grilled Tomato Salsa, recipe follows; 8 oz sour cream; 2 Tbsp canola oil, plus more for brushing tomatoes; 2 serrano chiles; 1 small red onion, coarsely chopped; 4 cloves garlic, peeled; 6 plum tomatoes, halved and seeded; 2 limes, juiced; ¼ cup chopped fresh cilantro leaves