This is my version of the original recipe. This makes enough for the 2 of us.
Ingredients-
4 tbsp. butter, divided
1 small onion, thinly sliced
2 sprigs, plus 1/4 teaspoon of fresh thyme
Kosher salt
Freshly ground black pepper
4 slider buns, halved
1/2 lb. Beef Shaved Steak
4 slices provolone cheese
3/4 c. low-sodium beef broth
1 tbsp. Worcestershire sauce
Method-
Preheat the oven to 350°.
In a large skillet over medium-high heat, melt 2 tablespoons of butter.
Add onion and thyme sprigs and season with salt and pepper.
Cook, stirring occasionally, until caramelized, about 15 minutes.
Discard thyme.
Remove onions to a plate.
Melt 1 tbsp of butter in the skillet and add steak, cooking it through.
Place the bottom halves of slider buns on a baking sheet or 9" x 9" baking pan, lined with aluminum foil, and top with steak, provolone cheese, caramelized onions, and slider bun tops.
Bake until cheese is melty and sliders are warmed through, 10 to 15 minutes.
Meanwhile, make the au jus:
Add the remaining 1 tablespoon of butter to the same skillet and melt over medium heat.
Add beef broth, Worcestershire, and thyme, and season with salt and pepper.
Simmer until slightly reduced, 10 minutes.
Serve sliders with au jus for dipping.