Preheat the oven to 250°F to 275°F
Wrap the ribs tightly in aluminum foil
Add a small splash of water, broth, or barbecue sauce before sealing the foil
Place the wrapped ribs on a baking sheet
Heat for 20 to 30 minutes for smaller portions
Heat for 30 to 45 minutes for larger portions
Check that the ribs are heated through to 165°F
Unwrap the ribs carefully
Brush with barbecue sauce if desired
Broil for 2 to 3 minutes for a crispier finish
Serve immediately