Add the olive oil and butter to the pressure cooker. When the butter is melted, brown the meat in batches for about 5 minutes per batch until all the meat is browned—do not stuff the pot. Add more oil as needed. Transfer the browned meat to a plate.
Add the onion to the pressure cooker. Sauté for about 3 minutes, stirring frequently, until softened.
Stir in the beef broth to deglaze the pot, scraping up any brown bits from the bottom of the pot.
Stir in the crushed tomatoes, parsley, bay leaves, and browned beef with any accumulated juices. Lock the lid in place. Select High Pressure and 10 minutes cook time.
When the cook time ends, let the pressure release naturally for 5 minutes and finish with a quick pressure release. When the valve drops, carefully remove the lid.
Add the carrots, and celery. Replace the lid and cook on High Pressure for 2 minutes more. When the cook time ends, turn off the pressure cooker. Let the pressure release naturally for 5 minutes and finish with a quick pressure release. When the valve drops, carefully remove the lid. Remove and discard the bay leaves.
In a small bowl, whisk the flour and cold water until smooth. Add 1 cup hot broth to the flour mixture and stir to combine. Add the slurry to the pot.
And bring the sauce to a boil, stirring constantly until it thickens. Stir in the and peas. Season with additional salt and pepper to taste.
Notes
Notes If you prefer russet potatoes, substitute 2 cups peeled and diced into bite-sized pieces.*If you want to skip chopping vegetables all together, you can use a frozen mixed vegetable medley with carrots and peas, I'd add about 2 cups. Use a 12 minute cook time and a 10 minute natural pressure release, then finish with a quick pressure release.