Mix the sauce: In a bowl or directly in your slow cooker, whisk together the barbecue sauce, honey, ketchup, mustard, Worcestershire, onion powder, garlic powder, smoked paprika, and red pepper flakes.
Taste and add a pinch of salt and pepper if needed.
Add the sausages: Pour in the little smokies and stir to coat them evenly in the sauce.
Slow cooker option: Cover and cook on Low for 2–3 hours or High for 1–1.5 hours, stirring once halfway through. They’re ready when heated through and the sauce is glossy.
Stovetop option: Add everything to a medium saucepan over medium heat. Bring to a gentle simmer, then reduce to low and cook for 12–15 minutes, stirring occasionally until fully heated and slightly thickened.
Adjust and finish: If the sauce tastes too sweet, add a splash of apple cider vinegar or more mustard.
If it’s too tangy, add an extra drizzle of honey.
Serve: Transfer to a serving bowl, garnish with chopped herbs if you like, and set out toothpicks. Keep warm in the slow cooker on the Warm setting for parties.