Flat Iron Steak Recipe Crock Pot

Ingredients

• 2 pounds flat iron steak (trimmed of excess fat)
• 1/4 cup olive oil (for marinade)
• 1/4 cup soy sauce (adds umami and saltiness)
• 2 tablespoons balsamic vinegar (for acidity and depth)
• 2 cloves garlic (minced, for fresh aromatic punch)
• 1 tablespoon Worcestershire sauce (boosts savory flavor)
• 1 teaspoon freshly ground black pepper
• 1 large onion (sliced)
• 2 large carrots (peeled and cut into chunks)
• 2 stalks celery (sliced)
• 1 cup beef broth (helps maintain juiciness)
• 2 sprigs fresh rosemary (for woodsy aroma)
• 2 sprigs fresh thyme (adds earthy notes)
• Salt 1 teaspoon
• Smoked paprika 1 teaspoon
• Crushed red pepper 1/4 teaspoon
• Brown sugar 1 tablespoon
• Tomato paste 1 tablespoon