Editorial standards: editorial policy · Affiliate disclosure: affiliate disclosure · Family-tested archive — updated 2026-07. 325°F skillet, 11 minutes Knob Sandwich Recipe Knob sandwich butters the outer loaf, layers roast beef, cheddar, mango chutney, and salt-and-vinegar kettle chips, then grills at about 325°F for two to three minutes per side — one sandwich in eleven…