Instant Pot Instructions: 

1. Cut the meat into individual steak portions. Use a meat tenderizer hammer* to pound the meat to ½ inch thickness. 
2. Season each of the steaks with garlic powder, salt, pepper, smoked paprika and oregano. Press seasonings into the meat. 
3. Turn Instant Pot to sauté setting. When display says HOT add in the oil, celery and onion. Sauté for about 4-5 minutes. Add in the broth and scrape bottom of pot so that nothing is sticking. Turn off Instant Pot. 
4. Add in the steaks. Dump the tomato paste, Worcestershire and tomatoes on top of the meat. 
5. Cover Instant Pot and secure the lid. Make sure valve is set to sealing. Set the manual/pressure cook button to 30 minutes. When time is up let pot sit for 15 minutes and then move valve to venting. Remove the lid. 
6. In a small bowl stir together cornstarch and water until smooth. Turn Instant Pot to sauté setting and stir in the slurry to thicken the sauce. 
7. Serve steaks covered in the sauce. Serve with rice or mashed potatoes. 

Slow Cooker Instructions: 

1. Cut the beef into individual steak portions. Use a meat tenderizer hammer* to pound the meat to ½ inch thickness. 
2. Season each of the steaks with garlic powder, salt, pepper, smoked paprika and oregano. Press seasonings into the meat. 
3. Add broth, onions, celery, tomato paste, Worcestershire and tomatoes into slow cooker. Stir well. Nestle the meat into the slow cooker. 
4. Cover and cook on low for 8-10 hours, or until tender.
5. In a small bowl stir together cornstarch and water until smooth. Stir mixture into slow cooker and cook on high without the lid for 10-20 minutes until sauce has thickened. 
6. Serve steaks covered in the sauce. Serve with rice or mashed potatoes.