Apply salt and pepper on the beef.
In a pressure cooker, add vegetable oil and butter and place it over medium heat.
When the butter melts, add the beef. Cook it for 5 minutes until it turns brown.
Transfer the beef to a plate.
In the same pot, add onions and saute for 5 minutes. Add the beef broth to it.
Add the browned beef, tomatoes, bay leaves, and parsley to it on high pressure. Cook it on high pressure for 10 minutes
Release the pressure and leave it for 5 minutes. Then, add potatoes, carrots, and celery to it. Cook them for 2 more minutes on high pressure.
When it cooks, repeat the process of releasing pressure from it. Then, remove bay leaves from it.
Whisk flour and cold water in a small bowl until smooth. In the bowl, add the mixture from the cooker and mix. Add this mixture to the cooker.
Bring the sauce to a boil. Lastly, add corn, peas, salt and pepper to it.
Serve immediately.