Jump to Recipe Print RecipeThis post may contain affiliate sales links. Please read my disclosure policy.Sweet, slightly tangy, buttery, and addicting, with one taste this Crockpot Honey Mustard Chicken will be your new favorite dinner. Similar to my Baked Honey Mustard Chicken, but made in a slow cooker.Homemade Honey Mustard SauceWhile you can buy a bottle of honey mustard, I much prefer making this at home with a few simple (but delicious!) ingredients. It’s so tasty cooked low and slow in the crockpot with some chicken. Here are the basic ingredients:Onion and Garlic –two basic but powerful ingredients in terms of flavor!Dijon Mustard and Honey –this is where the sweet tangy flavor comes from. If you don’t have Dijon mustard, regular yellow mustard is a good substitute. Or feel free to experiment with any specialty mustard or honey.Salted Butter –I recommend using butter and not subbing it out for oil because the oil tends to make it a bit greasy while the butter is perfect for fla...