The Best Ever Slow Cooker Chicken Thighs You'll Ever Make! - Sweet Caramelized Onion Chicken Recipe
This slow cooker chicken thigh recipe is wonderfully simple yet packed with deep, sweet flavour from caramelised onions and brown sugar. Bone-in, skin-on chicken thighs are seasoned with oregano, salt and pepper, then seared until golden before being nestled into the slow cooker. Sliced onions are gently caramelised in the same pan with garlic and brown sugar, then poured over the chicken to slow cook for 6 hours. The result is incredibly tender chicken that falls right off the bone, bathed in a rich, sweet onion sauce. It's the kind of effortless recipe that tastes like it took hours of careful attention.
Watch: The Best Ever Slow Cooker Chicken Thighs You'll Ever Make! - Sweet Caramelized Onion Chicken Recipe
Original recipe video — click to play
Ingredients
Chicken
- 6 pieces bone-in skin-on chicken thighs
Approximately 1 kg (2.2 lb) total
- 1 ½ tsp salt
Adjust to taste
- ½ tsp black pepper
Adjust to taste
- 1 tsp dried oregano
Caramelised Onion
- 2 tbsp olive oil
Enough to coat the pan for searing and sautéing
- 1 large large onion, sliced
Approximately 250 g (9 oz)
- 8 cloves garlic cloves, left whole or lightly crushed
Use 6–8 large cloves
- 50 g brown sugar
Approximately 0.25 US cup
Method
- 1
Season the chicken thighs generously on both sides with the salt, black pepper and dried oregano. Pat the seasoning into the skin to help it stick.
~5 mins - 2
Heat a drizzle of olive oil in a large frying pan over medium-high heat. Once hot, place the chicken thighs skin-side down into the pan. Sear for about 3 minutes per side until nicely golden brown. Transfer the seared chicken to the slow cooker.
~7 minsTip: Don't skip this step — searing adds wonderful colour and flavour to the finished dish.
- 3
Reduce the heat to medium and add the sliced onion to the same pan (add a little more oil if needed). Sauté the onion for 10 to 15 minutes, stirring occasionally, until the onion is soft and beautifully caramelised.
~15 minsTip: Take your time here — the slower you caramelise the onions, the sweeter and more flavourful they become.
- 4
Add the garlic cloves and brown sugar to the caramelised onions. Stir everything together and sauté for 1 more minute until fragrant and the sugar has melted. Transfer the onion mixture over the chicken in the slow cooker.
~2 mins - 5
Place the lid on the slow cooker and cook on Low for 6 hours or on High for 4 hours, until the chicken is fall-off-the-bone tender and cooked through.
~6 hrsTip: The chicken is done when it reaches an internal temperature of 74°C (165°F).
- 6
Carefully remove the chicken thighs from the slow cooker. Spoon the sweet caramelised onion sauce over the top and serve immediately with your choice of sides.
~2 minsTip: For extra-crispy skin, place the thighs on a baking tray and pop under a hot grill for 2–3 minutes before serving.
Nutrition
Detailed nutritional information is coming soon. For now, we recommend using a tool like MyFitnessPal to calculate values for your specific brands and quantities.
Frequently Asked Questions
Yes, boneless skinless thighs work well, but reduce the cooking time to around 4 hours on Low or 3 hours on High, as they cook more quickly. You'll lose the crispy skin element, but the flavour from the caramelised onions will still be fantastic.
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