Crockpot Sloppy Joes

Bahan-bahan (4 porsi)

• 1 tablespoon extra virgin olive oil
• 1 pound lean ground beef (90/10)
• 1 teaspoon kosher salt (divided)
• 2 medium carrots (¼-inch diced (about 1 cup))
• 1 small yellow onion (finely chopped (about 1 cup))
• 1 small red bell pepper (¼-inch diced (about 1½ cups))
• 2 cloves garlic (minced (about 2 teaspoons))
• 2 teaspoons chili powder
• 2 tablespoons tomato paste
• 1 tablespoon Dijon mustard
• ¼ cup ketchup
• 2 tablespoons Worcestershire sauce
• 1 tablespoon brown sugar
• 1 teaspoon red wine vinegar
• ¾ cup low-sodium beef broth
• 4 Kaiser rolls (or rolls of choice)
• Optional for serving: Sliced cheddar cheese, pickles