Ingredients

  • 2 tablespoons vegetable oil
  • 1/2 small red onion, chopped
  • 2 cloves garlic, minced
  • 3/4 pound ground beef
  • Kosher salt
  • 2 tablespoons tomato paste
  • 1 tablespoon chili powder
  • 1 15-ounce can refried beans
  • 1/3 cup sour cream
  • 8 corn tostadas (flat, hard taco shells)
  • 1 1/2 cups shredded monterey jack cheese
  • Shredded lettuce, hot sauce and/or cilantro, for topping