Set the Instant Pot to sauté mode and add the olive oil. Once hot, add the lamb pieces and brown them on all sides for about 5 minutes.
Add the diced onion and minced garlic. Cook for 2 minutes until the onion starts to soften.
Stir in the tomato paste and cook for 1 minute. Then add the diced tomatoes, beef broth, oregano, rosemary, salt, and black pepper.
Cancel sauté mode, secure the lid, and set the Instant Pot to high pressure for 30 minutes. Make sure the valve is sealed.
Allow a natural pressure release for 10 minutes, then quick release any remaining pressure. Open the lid and stir in the white beans.
Set the Instant Pot back to sauté mode for 3 to 4 minutes to warm the beans through. Turn off the pot and stir in the fresh parsley before serving.