Melt the butter in a glass bowl.
Add the onion powder, garlic powder, worcestershire sauce, and mustard into the butter and stir well.
Add the everything seasoning to the mix if using.
Pour the butter mixture over the top of the rolls. Use a brush to spread around evenly.
Cover pan with foil. Bake 15 minutes covered, then remove foil for an additional 15 minutes or until sliders are golden brown.