Preheat your oven to 375 ̊F. This is the perfect temperature to ensure that your chicken thighs cook evenly and develop a gorgeous golden brown color.
While the oven heats up, pat the chicken thighs dry with a paper towel. This helps the skin crisp up beautifully during roasting.
Arrange the chicken thighs in a 9×13 casserole dish. Make sure they’re skin-side up and season them generously with salt and pepper. This step is crucial to build flavor from the very beginning.
In a small mixing bowl, combine the Dijon mustard, honey, olive oil, minced garlic, and rosemary.
Stir the mixture until well combined, creating a wonderful glaze that will coat the chicken thighs.
Using a brush or spoon, generously apply the honey mustard mixture over the top and sides of the chicken thighs. This is where the magic happens, as the glaze adds flavor and creates a beautiful caramelization.
Place the casserole dish in the preheated oven and bake for about 40 to 45 minutes. You’ll know the chicken is fully cooked when it reaches an internal temperature of at least 165 ̊F, but I prefer 175˚F for extra juiciness.
If you like a crispy top, broil the dish for an additional 1 to 2 minutes at the end of the cooking time. Just keep an eye on it to avoid burning!
Once done, remove the dish from the oven and allow it to rest for a few minutes. Then, spoon the pan sauce generously over the chicken before serving. This extra sauce adds an incredible burst of flavor!