Slow Cooker Swiss Steak

INGREDIENTS

• 1/4 cup all-purpose flour
• salt and pepper to taste
• 1 1/2 pounds round steak, cut into small pieces
• 3 tablespoons vegetable oil
• 3 stalks celery, chopped
• 1 onion, chopped
• 3 carrots, shredded
• 2 (14.5 ounce) cans diced tomatoes with juice
• 1 tablespoon Worcestershire sauce
• 2 tablespoons brown sugar, or to taste