Chimichurri Steak Tacos

Name: Chimichurri Steak Tacos
Prep time: 15 min
Cook time: 15 min
Total time: 30 min
Cuisine: American, Latin American
Ingredients: 1 shallot (chopped); 3 cloves garlic (chopped); 1 cup fresh parsley; 1 cup fresh cilantro; 1/4 cup fresh oregano; 3/4 cup olive oil; 1/4 cup red wine vinegar; 2 tablespoons lime juice; 1/2 teaspoon kosher salt; 1/4 teaspoon ground black pepper; 1/4 teaspoon red pepper flakes; 1 pound skirt steak; 1/2 cup olive oil; 1/4 cup lime juice; 2 cloves garlic (minced or pressed); 1 teaspoon kosher salt; 1 teaspoon ground black pepper; 3 ears corn; 1 red onion (sliced); corn or flour tortillas; cotija or queso fresco; olive oil (for brushing)