Preheat your oven to 350°F and spray a 9x13-inch baking dish with cooking spray.
Mix the shredded turkey with BBQ sauce in a medium bowl until well combined.
Slice the slider buns in half horizontally (keeping them connected as one sheet) and place the bottom half in the baking dish.
Spread the BBQ turkey mixture evenly over the bottom buns, then sprinkle with shredded cheese.
Place the top half of the buns over the cheese layer.
Combine melted butter, garlic powder, and parsley, then brush generously over the top of the buns.
Cover with foil and bake for 10 minutes, then remove foil and bake an additional 5 minutes until tops are golden and cheese is melted.
Let cool for 2-3 minutes, slice into individual sliders, and serve warm!