Preheat and Prepare: Heat your oven to 375°F (190°C) and line a baking sheet with foil for an easy clean-up.

Mix Sauce: Combine barbecue sauce, olive oil, apple cider vinegar, smoked paprika, garlic powder, and onion powder in a bowl.

Season Chicken: Arrange chicken thighs on the baking sheet, season with salt and pepper, and brush with half the sauce mixture. Top with onion rings.

Bake: Cook for 25 minutes, then flip the chicken, apply the remaining sauce, and bake for another 20-25 minutes until thoroughly cooked. For extra caramelization, broil for 3-4 minutes.

Rest and Serve: Let the chicken rest to lock in juices before garnishing with parsley and serving.

Variations & Tips:

Flavor Boost: Add a splash of bourbon to the sauce or chili powder for heat.

Feeding More: Easily scale the recipe; just use additional baking sheets as needed.

Meat Variations: Substitute thighs with drumsticks or breasts, adjusting cooking times to avoid drying out.

This Baked Barbecue Chicken Thighs with Onions recipe not only satisfies the taste buds but also pays tribute to the enduring legacy of American barbecue. Pair it with your chosen sides and enjoy a meal that's as rich in flavor as it is in history. Whether it's a warm summer evening or a cozy winter night, this dish is sure to bring comfort and joy to your table.