→ Main Ingredients
01 -
3 pounds sirloin steak, cut into bite-sized pieces
02 -
2 teaspoons kosher salt
03 -
1 teaspoon black pepper
04 -
1 tablespoon vegetable oil
05 -
1 small sweet onion, thinly sliced
06 -
3 cloves garlic, thinly sliced
07 -
1 cup unsalted beef stock
08 -
1 ounce au jus gravy mix
09 -
4 tablespoons unsalted butter, thinly sliced