Preheat the oven to 350°F.
If the slider buns aren't already sliced, carefully cut them in half horizontally.
Place the bottom halves in a 9x13 baking dish and layer the bologna evenly on top.
Spread the pimento cheese over the cut sides of the top buns, then place them on top of the bologna.
In a mixing bowl, whisk together the melted butter, brown sugar, Worcestershire sauce, mustard, and poppy seeds until well combined and the sugar is dissolved.
Slowly pour the butter mixture evenly over the sliders.
Bake uncovered for 15-20 minutes, or until the tops are golden brown and the sliders are heated through.
Let them cool slightly before serving.