Good-Cooking - Gluten Free Taco Quesadillas

Ingredients

• 2 tablespoons olive oil
• 1 small onion, minced
• 1 clove garlic, minced
• 1 pound ground sirloin
• 2 teaspoons cumin
• 2 teaspoons chili powder
• 1 teaspoon salt
• 1 teaspoon cracked black pepper
• 4 soft corn tortillas
• 1 cup shredded cheddar cheese
• 1/2 head iceberg lettuce
• 2 large plum tomatoes, finely diced (1 cup)
• Whole-milk sour cream, for garnish
• Chopped cilantro leaves, for garnish