Omit oil. Combine beef, steak seasoning, Bragg, water, peppercorns, broth, rosemary, thyme, onion, and garlic in the insert of an instant pot. Lock lid; set valve to sealing. Program for manual-high and 15 minutes. Allow for at least 10 minutes natural pressure release before carefully moving valve to venting. When pin drops, remove beef with slotted spoon and place on buns. Top with cheese. Optionally broil the sandwiches, open-faced, to melt the cheese. Serve with strained cooking liquid for dipping.