The Tastiest Philly Cheesesteak Sliders

0 In a bowl mix together the thinly sliced beef with olive oil, vinegar, baking soda, sugar, garlic powder, paprika, onion powder, minced garlic, black pepper, salt, and Worcestershire sauce.  
1 In a medium skillet on high, add in the sliced onions, green peppers and sauté for about 4 minutes. Add in the mushrooms and the marinated beef, sear for another 3-4 minutes until cooked.
2 Preheat oven to 350 F.
3 Place the bottom layer of the sliders in a 9x16 baking dish.  Spread the sautéed meat and veggies all over, then place the sliced cheese on top of the meat.  Cover with the top slider buns.
4 Mix together the butter spread ingredients.  Brush the top of the KING’S HAWAIIAN® Slider Buns with spread.  Bake for 15 minutes.  Enjoy warm!