2 pounds sirloin steak or stew beef cut into bite sized pieces
1 teaspoons kosher salt
1 teaspoon black pepper
2 tablespoons vegetable oil
1 small sweet onion thinly sliced
2 cloves garlic minced
1 cup unsalted beef stock
1 ounce packet au jus gravy mix
2 tablespoons unsalted butter thinly sliced
fresh chopped parsley for garnish
Place the steak into a large bowl with the salt and pepper and toss to combine. Get a large skillet hot over medium-high heat and add half of the oil. Sear off the steak pieces in batches and place them into an 8-quart slow cooker. Add more oil to the pan if needed. Once all the steak is seared, add the onion and garlic to the slow cooker, toss with the steak bites. Pour in the beef stock. Sprinkle the au jus packet over the top. Lay slices of the butter over the top. Cover the slow cooker and cook on high for 3-4 hours or low 6-8 hours. Stir every 30 minutes or so if you can. Serve with a garnish of fresh parsley.
