Season the beef cubes with the salt and pepper.

If using an Instant Pot place the vegetable oil in the pot and turn on the saute feature. If using a slow cooker place the vegetable oil in skillet over medium heat.

Add the beef to either the pot or skillet and saute for 5 minutes, stirring frequently, until the beef begins to brown.

Add in the garlic and onion and saute for 2-3 additional minutes, stirring frequently.

If using the Instant Pot add in the beef broth and thyme then place the lid on and hit the meat/stew button. (It will cook for 35 minutes. Then let pressure release naturally for 10 minutes. Release remaining pressure manually.)

If using the slow cooker place the beef with the onions and garlic in the slow cooker and pour the beef broth over top. Sprinkle with thyme. Cook on low for 8 hours or high heat for 4 hours.

Remove the beef from the Instant Pot or slow cooker. Allow to cool 10 minutes then shred.

If desired strain the au jus. Place the au jus in a saucepan over medium high heat and cook for 10 minutes to reduce.

Preheat the oven to 350 degrees.

Place the slider buns on cookie sheets. Then place half a slice of provolone cheese on the bottom half of each slider bun. Top each bun with a heaping amount of beef and top with the bun top.

Brush each bun with the melted butter and sprinkle with garlic powder and salt.

Bake for 10-12 minutes.

Serve sliders with the au jus.