Herb Roasted Chicken with Garlic Mustard Potatoes and Green Beans Step-by-step instructions

Before you start

Before beginning the cooking process, organize the workspace and prepare all ingredients. Wash the baby potatoes thoroughly to remove any dirt, then pat them completely dry before cutting them in half. Trim the ends of the fresh green beans.

Measure out the herbs and mustard into small bowls. Mince the garlic cloves finely. Ensure the chicken breasts are patted dry with paper towels to help the herb rub adhere properly, which creates a better crust during roasting.

Instructions

Preparation and Seasoning

1. 1Prepare and Season the Potatoes
   In a large mixing bowl, combine the halved baby potatoes, minced garlic, and mustard. Toss the ingredients thoroughly until every potato half is evenly coated with the mustard mixture.
   Look for Ensure the mustard mixture is evenly distributed over all the potatoes.
   Tip Cut the potatoes to a uniform size to guarantee even roasting.
2. 2Season the Chicken Breasts
   Pat the chicken breasts dry with paper towels. Rub them generously on all sides with the mixed herbs, pressing the herbs gently so they adhere to the meat to form a nice crust.
   Look for Press the herbs gently into the meat so they form a nice crust.
   Tip Pound any exceptionally thick breasts to an even thickness before seasoning.

At the end of this initial preparation phase, the baby potatoes should be thoroughly and evenly coated in a thick, fragrant mixture of mustard and minced garlic. The chicken breasts should be fully covered in a beautiful, aromatic layer of herbs, with no bare spots. All ingredients should be arranged neatly, ready for the heat of the oven.

Roasting the Chicken and Potatoes

3. 3Arrange the Ingredients for Roasting
   Preheat the oven to 400°F (200°C). Arrange the seasoned chicken breasts and the mustard-coated baby potatoes in a single layer on a large rimmed sheet pan, ensuring they are not overcrowded to allow for proper browning and crispy edges.
   Look for Spread the potatoes out cut-side down for the best caramelization.
   Tip Give the chicken and potatoes space to prevent them from steaming.
4. 4Roast the Chicken and Potatoes
   Roast in the preheated oven for 25 to 30 minutes. The chicken breasts must reach a safe internal temperature of 165°F (74°C) when tested with a meat thermometer in the thickest part. Remove the chicken to a cutting board to rest.
   Look for The chicken should have a golden-brown crust and run with clear juices.
   Safe temperature 165°F (74°C) internal temperature (poultry)
   Tip Always rest the chicken to lock in the juices before slicing.

As this roasting phase concludes, the chicken breasts will have developed a beautiful, golden-brown herb crust, and the juices will run clear. The halved baby potatoes will appear golden, with caramelized, crispy edges from the mustard glaze. The kitchen will be filled with a rich, savory aroma of roasted garlic, toasted herbs, and sizzling chicken drippings.

Finishing the Green Beans and Assembly

5. 5Finish the Green Beans in Pan Drippings
   While the chicken rests, add the trimmed green beans to the sheet pan, tossing them directly in the hot pan drippings and roasting for an additional 8 to 10 minutes until they are tender-crisp and vibrant green.
   Look for The green beans should be tender-crisp and glistening with pan juices.
   Tip Do not overcook the beans to maintain their bright green color and snap.
6. 6Slice and Assemble the Dish
   Using a sharp chef knife, slice the rested, juicy herb-crusted chicken breasts on a clean cutting board. Arrange the sliced chicken, roasted garlic mustard potatoes, and green beans neatly inside a rectangular glass baking dish before serving.
   Look for The chicken slices should look moist and show a distinct herb crust.
   Tip Pour any remaining cutting board juices back over the sliced chicken.

At the final checkpoint, the green beans should be tender-crisp, vibrant green, and glistening with a glossy coat of hot pan drippings. The sliced chicken breasts should be incredibly juicy, releasing savory juices as they are carved.

When arranged in the glass baking dish, the entire meal should look hot, fresh, and beautifully coordinated, ready to be served immediately.

Common mistakes

One common mistake is overcrowding the sheet pan, which traps steam and causes the potatoes to boil rather than roast and crisp. Ensure there is sufficient space between the potato halves and the chicken breasts. Another error is adding the green beans too early in the cooking process, which results in overcooked, wrinkled, and dull-looking beans.

Adding them during the last few minutes ensures they stay crisp-tender and bright green. Finally, skipping the resting period for the chicken will cause all the delicious juices to run out onto the cutting board, leaving the meat dry.

How to tell it’s done

To determine perfect doneness, always rely on an instant-read meat thermometer rather than visual cues alone. Insert the probe into the thickest part of the chicken breasts; they are safely cooked and ready when the thermometer reads exactly 165°F (74°C).

The potatoes are done when they can be easily pierced with a fork and exhibit a crispy, golden exterior. The green beans should be bright green and offer a slight, satisfying snap when bitten, indicating they are perfectly tender-crisp.

• Poultry: 165°F (74°C) in the thickest part