Preheat the oven to 350 degrees
Mix the apple cider vinegar, soy sauce and honey together in a small cup. Get the other ingredients ready to go
Sprinkle the chicken thighs with salt and pepper
Heat the oil and butter in a cast iron pan until the butter is melted and the oil is hot
Place the chicken thighs skin side down in the pan and cook until well browned - about 5 minutes (resist the temptation to move them around)
Turn the chicken thighs over and cook until browned on the bottom - about 5 minutes
Remove the chicken thighs and place on a plate
Add the potatoes and onions to the pan cook until golden brown. Season with salt and pepper and remove to a plate
Melt a tablespoon of butter to the pan and add the garlic. Cook until fragrant - about 30 seconds
Add the sauce ingredients to the pan, bring to a boil and cook until the sauce has reduced a bit
Add the potatoes back into the pan and cook for a minute to heat them up
Place the chicken thighs on top of the potato mixture and bake for 25-30 minutes until the chicken is done (registers 160 degrees) and the sauce is bubbly
Serve with a nice glass of white wine and enjoy!