Baked Chicken Breasts with Sweet Potatoes and Onion Gravy

This Baked Chicken Breasts with Sweet Potatoes and Onion Gravy is an easy, hearty family dinner made with juicy seasoned chicken breasts, tender roasted sweet potatoes, onions, and a rich savory pan sauce.

Everything cooks together in one baking dish, making this a simple meal with minimal cleanup. The sweet potatoes absorb the flavorful juices from the chicken while the onions soften into the sauce, creating a comforting dinner that works well for busy weeknights or Sunday meals.

Why You’ll Love This Recipe

• Easy one-dish dinner
• Juicy baked chicken breasts
• Tender roasted sweet potatoes
• Rich onion gravy
• Simple everyday ingredients
• Perfect for family dinners
• Great for meal prep

Ingredients

• 3 large boneless, skinless chicken breasts
• 2 large sweet potatoes, peeled and cut into 1-inch cubes
• 1 large yellow onion, cut into thick pieces
• 2 tablespoons olive oil
• 3 cloves garlic, minced
• 1 teaspoon garlic powder
• 1 teaspoon onion powder
• 1 teaspoon smoked paprika
• 1 teaspoon dried thyme
• 1/2 teaspoon dried rosemary
• 1 teaspoon kosher salt
• 1/2 teaspoon black pepper
• 1 tablespoon Worcestershire sauce
• 1 tablespoon Dijon mustard
• 1 1/2 cups low-sodium chicken broth
• 1 tablespoon unsalted butter
• 1 tablespoon all-purpose flour
• 1 tablespoon chopped fresh parsley, optional

How to Make Baked Chicken Breasts with Sweet Potatoes

Step 1: Preheat the Oven

Preheat the oven to 400°F (205°C).

Lightly grease a large baking dish.

Step 2: Prepare the Sweet Potatoes

Place the cubed sweet potatoes and onion pieces in the baking dish.

Drizzle with 1 tablespoon olive oil and season lightly with salt, black pepper, and half of the garlic powder.

Toss until evenly coated.

Step 3: Season the Chicken

Pat the chicken breasts dry with paper towels.

Rub them with the remaining olive oil.

Season with the remaining garlic powder, onion powder, smoked paprika, thyme, rosemary, salt, and black pepper.

Step 4: Arrange the Chicken

Place the seasoned chicken breasts on top of the sweet potatoes and onions.

Step 5: Prepare the Savory Sauce

In a bowl, whisk together the chicken broth, Worcestershire sauce, Dijon mustard, and minced garlic.

Pour the mixture around the chicken and vegetables.

Step 6: Bake

Cover the baking dish loosely with foil.

Bake for about 25 minutes.

Step 7: Finish Uncovered

Remove the foil and continue baking for another 15 to 20 minutes.

The chicken is ready when the thickest part reaches an internal temperature of 165°F (74°C).

The sweet potatoes should be tender when pierced with a fork.

Step 8: Rest the Chicken

Transfer the chicken breasts to a plate and let them rest for about 5 to 10 minutes.

Step 9: Make the Onion Gravy

Carefully transfer about 1 cup of the cooking liquid and softened onions from the baking dish to a small saucepan.

In another small saucepan, melt the butter over medium heat.

Whisk in the flour and cook for about 1 minute.

Gradually whisk in the cooking liquid until smooth.

Simmer for about 3 to 5 minutes, stirring frequently, until the gravy thickens.

Step 10: Serve

Return the chicken to the baking dish or arrange it on a serving platter with the roasted sweet potatoes.

Spoon the warm onion gravy over the chicken and garnish with fresh parsley if desired.

Tips for the Best Baked Chicken

• Use similar-size chicken breasts: They will cook more evenly.
• Cut the sweet potatoes evenly: Uniform cubes help them finish at the same time.
• Do not overcook the chicken: Use a meat thermometer for the best texture.
• Cover during the first stage: This helps keep the chicken moist while the potatoes begin to soften.
• Rest the chicken: Letting it rest helps retain the juices.
• Use the pan juices: They create a flavorful base for the onion gravy.

Easy Variations

Garlic Herb Chicken and Sweet Potatoes

Add extra garlic, rosemary, thyme, and parsley for a stronger herb flavor.

Honey Mustard Chicken

Add 1 tablespoon honey to the broth and Dijon mixture for a slightly sweet glaze.

Maple Sweet Potato Chicken

Drizzle 1 tablespoon pure maple syrup over the sweet potatoes before baking.

Chicken with Carrots and Sweet Potatoes

Add 2 large carrots cut into chunks alongside the sweet potatoes.

Spicy Baked Chicken

Add cayenne pepper or crushed red pepper flakes to the seasoning mixture.

What to Serve with Baked Chicken and Sweet Potatoes

• Green beans
• Roasted broccoli
• Garden salad
• Steamed peas
• Garlic bread
• Roasted Brussels sprouts
• Rice

Can I Use Chicken Thighs?

Yes. Boneless or bone-in chicken thighs work well in this recipe.

Cooking time may vary depending on size and whether the thighs are bone-in.

Can I Leave the Sweet Potato Skins On?

Yes. The skins can be left on if the sweet potatoes are scrubbed thoroughly before cutting.

Make-Ahead Instructions

The sweet potatoes and onions can be cut several hours ahead and refrigerated in an airtight container.

The chicken can also be seasoned up to 24 hours ahead and kept covered in the refrigerator.

For the best texture, assemble and bake the dish shortly before serving.

Storage

Refrigerator

Store leftover chicken, sweet potatoes, and gravy in an airtight container in the refrigerator for up to 3 to 4 days.

Freezer

Allow everything to cool completely before transferring to freezer-safe containers.

Freeze for up to 2 months.

Reheating

Reheat covered in a 325°F (165°C) oven until warmed through.

Add a small splash of chicken broth if the sauce has thickened during storage.

Recipe Information

• Prep Time: 15 minutes
• Cook Time: 40 to 45 minutes
• Rest Time: 5 to 10 minutes
• Total Time: About 1 hour
• Servings: 4 to 6
• Course: Main Dish
• Cuisine: American
• Calories: Approximately 430 calories per serving, depending on portion size

Frequently Asked Questions

What temperature should chicken breasts reach?

Chicken breasts should reach an internal temperature of 165°F in the thickest part before serving.

Can I use chicken thighs instead?

Yes. Chicken thighs work well, but the cooking time may need to be adjusted.

How do I keep chicken breasts from drying out?

Avoid overcooking and check the internal temperature with a meat thermometer. Covering the dish during the first part of baking also helps retain moisture.

Can I add other vegetables?

Yes. Carrots, Brussels sprouts, parsnips, or bell peppers can all work well.

Do I need to peel the sweet potatoes?

No. Peeling is optional as long as the sweet potatoes are scrubbed thoroughly.

Can I prepare the chicken ahead?

Yes. Season the chicken up to one day in advance and refrigerate until ready to bake.

Can I make the gravy without flour?

Yes. A cornstarch slurry can be used instead. Mix cornstarch with cold water before whisking it into the hot cooking liquid.

Can I freeze leftovers?

Yes. Cool completely and freeze in airtight containers for up to two months.

What other potatoes can I use?

Yukon Gold or baby potatoes can replace the sweet potatoes, although the flavor will be less sweet.

Final Thoughts

This Baked Chicken Breasts with Sweet Potatoes and Onion Gravy is an easy one-dish dinner with tender chicken, roasted sweet potatoes, soft onions, and a rich savory gravy.

It is simple enough for a weeknight meal but comforting enough for Sunday dinner, and the leftovers reheat well for lunch or meal prep.