Slow-Cooked Chile Con Carne

Ingredients

• Cooking spray
• 1 1/2 cups chopped onion (about 1 medium)
• 2 garlic cloves, minced
• 1 pound sirloin, cut into 1-inch cubes
• 2 1/2 cups diced plum tomato (about 6)
• 1 tablespoon chili powder
• 2 teaspoons ground cumin
• 1 teaspoon dried oregano
• 1 (15-ounce) can pinto beans, rinsed and drained
• 1 (15-ounce) can black beans, rinsed and drained
• 1 (14-ounce) can fat-free, less-sodium beef broth
• 1/4 teaspoon salt