Instant Pot Beef Po Boy Sandwiches Recipe - Six Sisters' Stuff

Ingredients

• 3 pounds flank steak
• 2 teaspoons sea salt
• 1 teaspoon ground black pepper
• 2 teaspoons garlic powder
• 1 teaspoon onion powder
• 1 ½ Tablespoons olive oil
• 1 large onion (cubed)
• 2 sprigs fresh thyme
• 2 sprigs fresh rosemary
• 1 packet brown gravy mix
• 1 ½ cups beef broth
• 2 Tablespoons Worcestershire sauce
• 4 Tablespoons butter (cut into slices)
• 6 Large French Rolls
• 6 Tablespoons mayonnaise
• 6 Tablespoons mustard
• 2 large tomatoes (sliced)
• 1 ½ cups shredded cabbage
• sliced pickles (to taste)