Ingredients
1 tablespoon olive oil
1 small yellow onion, finely chopped
3 cloves garlic, minced
1/3 cup tomato paste (from a 6-ounce can)
1/4 teaspoon cayenne pepper (optional)
4 teaspoons chili powder
1 pound ground beef (80 percent lean)
Coarse salt
8 crisp taco shells
Lettuce, tomatoes, scallions, cheddar, and lime wedges, for serving
Preparation
In a large skillet, heat oil over medium-high. Add onion and garlic and saute until translucent, about 5 minutes. Stir in tomato paste, cayenne (if using), and chili powder and cook until fragrant, about 30 seconds.
Add beef and 1 teaspoon salt. Cook, breaking up meat with a wooden spoon, until cooked through, about 7 minutes. Spoon off excess fat. Serve filling in taco shells with toppings.
