French Dip Sliders

This is one of my favorite dishes.  It's quick and delicious and just so easy to make.  

6 Tbsp salted butter
2 Tbsp olive oil
2 white onions, thinly sliced

12 dinner rolls (split

1 lb shaved beef

12 cheese slices (Provolone or Harvarti)

2 garlic cloves, minced

1 1/4 tsp dried thyme

1 1/2 cups beef broth

1 Tbsp Worcestershire sauce

1/4 tsp freshly ground black pepper

2 tsp red cooking wine

Heat 2 Tbsp olive oil in a skillet over medium-high heat.  Add the shaved beef and season with the spice blend of your choice.  Cook until medium.  Drain and set aside.

Heat 2 Tbsp of the butter and the olive oil in an extra large skillet over medium heat.  Add onions.  Cook 20 minutes or until very tender and caramelized, stirring frequently.  Remove from heat.  

Preheat oven to 350 degrees.  Arrange roll bottoms in a 13 x 9" baking pan.  Bake for r10 minutes or until the bottoms are toasted.  Remove from the oven and stack roast beef on each of the roll bottoms, layer with cheese (cheese will overlap a bit) and onions.  (Do not clean the skillet.)  Add roll tops.  In a small bowl microwave the remaining 4 Tbsp of butter 30 seconds or until melted.  Stir in garlic and 1 tsp of the thyme.  Brush over sliders Cover pan with foil.  

Bake 15 minutes.  Uncover; bake 10 - 15 minutes more or until cheese is melted and roll tops are light brown.

Meanwhile, for au jus, add broth to skillet used to caramelize the onions; whisk to loosen any bits from bottom of skillet.  Add Worcestershire sauce, the remaining 1/4 tsp thyme, and the pepper.  Bring to a boil; reduce heat.  Simmer uncovered 10 minutes.  Stir in the red wine.  Serve sliders with warm au jus.