Southwestern Taco Salad

Ingredients (12)

• 2 packages (5.6 ounces each) refrigerated taco salad shells
• 3 bacon strips, diced
• 1 pound lean ground beef (90% lean)
• 2 large onions, chopped
• 2 garlic cloves, minced
• 3 tablespoons chili powder
• 1 teaspoon salt
• 1 teaspoon ground cumin, optional
• 1 can (14-1/2 ounces) diced tomatoes, undrained
• 1 can (16 ounces) refried beans
• 8 cups shredded lettuce
• Toppings: chopped tomatoes, salsa, sour cream, guacamole, olives