Toss together pulled barbecued pork and 1/2 cup of your favorite bottled barbecue sauce. Press biscuits into triangles (about 5 inches on each side); spoon 2 Tbsp. pork mixture along 1 edge of each triangle.
Roll up triangles.
Place rolls, seam sides down, 2 inches apart on a parchment paper-lined baking sheet.
Bake 10 to 12 minutes or until golden. Meanwhile, prepare Buttermilk Ranch Sauce: Stir together buttermilk, mayonnaise, 1 Tbsp. bottled barbecue sauce, Ranch dressing mix, and table salt until smooth.
Serve creamy Buttermilk-Ranch sauce with BBQ in a Blanket.