Boneless skinless chicken thighs are the part of the bird that actually benefits from oven heat — the fat keeps them juicy at high temperatures where a breast would dry out. Baked at 425°F for 25 minutes, they come out tender with caramelized edges and enough pan sauce to spoon over everything on the plate.

A white baking dish filled with baked boneless chicken thighs, sliced shallots, and fresh herbs in a golden, seasoned sauce. The dish is set on a light surface with part of a gray cloth visible to the side.

The bare facts: Bake at 425°F, 25-30 minutes, until the chicken reaches 165°F internally — that’s the whole method. But the saucy marinade makes it worth making this version instead of just plain chicken thighs.

What readers are saying:

“This recipe was amazing! My husband and I absolutely loved it! The tanginess of the mustard and lemon were simply out of this world.”

Dijon, tomato paste, and the magic of a spare pantry

The marinade for these chicken thighs came together on the fly in an Airbnb kitchen — Dijon mustard, tomato paste, lemon juice, garlic — and it’s stayed in my steady rotation ever since. It takes two minutes to mix and no time to marinate, and the tomato paste creates a glaze that sets into a crust at high heat.

Ingredients to make baked chicken thighs arranged on a tray, with raw boneless skinless chicken pieces, shallots, garlic, mustard, thyme and tomato paste.
  • Boneless, skinless chicken thighs: The fat content is what makes this cut reliable at high oven heat — thighs have roughly twice the fat of a breast, which means they stay moist while the exterior caramelizes. A breast at 425°F for 25 minutes would be dry; a thigh at the same time and temperature comes out tender with some crust. The one thing that causes problems is overcrowding — if the pieces are packed too tightly, they steam rather than roast and you lose the crust. Use a pan just large enough to hold them in a single layer with a little room between pieces.
  • Marinade: The combination looks casual but it’s built on balance — the tomato paste brings concentrated sweetness and body, while the Dijon and lemon juice provide the acidity that cuts through the fat in the chicken and keeps the flavors sharp. Together they create a coating with enough sugar to caramelize at high heat and enough acid to act as a quick tenderizer. Mix the marinade and chicken in the morning, refrigerate all day, and the flavor will be noticeably deeper by the time it hits the oven.
  • Shallots: They’re worth seeking out rather than defaulting to onion. Their higher sugar content means they caramelize cleanly at high heat without turning bitter — at 425°F, the exposed pieces crisp at the edges while the pieces tucked under the chicken get soft and sweet. That contrast in texture is part of what makes the dish. If you can’t find shallots, red onion is the closest substitute, though it will be sharper and less sweet in the finished pan sauce.

How to bake boneless skinless chicken thighs

  • Baked boneless chicken thighs sit in a white tray on the countertop. Nearby, a bowl holds a zesty marinade with a white spatula, accompanied by a pepper grinder, a small bowl of salt, and a shallot.
    1. Use a baking dish just large enough to hold 6–8 thighs snugly — 2 to 3 quarts is ideal. A pan that’s too large causes the pan juices to spread and evaporate before they can form a sauce.
  • Raw baked boneless chicken thighs with spices rest on a white tray, next to thinly sliced onions in a yellow bowl. An empty bowl with orange seasoning remnants and a white spatula is nearby, set on a light countertop.
    2. Whisk the marinade ingredients until combined. The mixture will look thick — that’s the tomato paste and mustard doing their job. A concentrated coating adheres to the chicken better than a thin one.
  • Raw marinated chicken pieces, ideal for baked boneless chicken thighs, are arranged in a white baking dish with herbs. Nearby, a yellow plate holds sliced shallots, a sprig of thyme, and a small white container on the white surface.
    3. Toss the chicken with tongs so that the pieces are evenly coated.
  • A white baking dish filled with boneless chicken thighs marinated in a reddish sauce, topped with sliced shallots and sprigs of thyme. On the side, a small bowl with salt and a white pepper grinder are visible.
    4. Tuck the shallots in between the thighs rather than piling them on top. The pieces nestled under the chicken will soften into the pan sauce; the exposed ones will crisp at the edges. At this point you can bake immediately or cover and refrigerate up to 24 hours.
  • A white baking dish filled with baked boneless chicken thighs, sliced shallots, and fresh herbs in a golden, seasoned sauce. The dish is set on a light surface with part of a gray cloth visible to the side.
    5. Bake uncovered at 425°F for 25–30 minutes, until the juices are bubbling and the shallots are golden.

How to tell when the chicken is done

The chicken is done when it reaches 165°F internally — using a thermometer is better than guessing.

What to serve with baked chicken thighs

These thighs are substantial enough to anchor a simple weeknight plate. Fresh green bean almondine is a natural pairing — the brightness of the lemon cuts through the richness of the pan sauce. Crispy smashed potatoes are a good call — the garlic and rosemary echo the marinade without competing with it. For a lighter option, marinated white bean salad doesn’t need cooking and holds up well alongside the pan sauce.

A white baking dish filled with baked boneless chicken thighs, sliced shallots, and fresh herbs in a golden, seasoned sauce. The dish is set on a light surface with part of a gray cloth visible to the side.
4.98 from 1018 ratings

Baked Boneless Chicken Thighs (Dijon, Tomato & Crispy Shallots)

Karen Tedesco
The marinade is two minutes of whisking — Dijon, tomato paste, lemon, garlic — and the result is juicy, caramelized chicken thighs with crispy shallots in 30 minutes.
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Yield: 4 servings
Prep Time: 5 minutes
Cook Time: 25 minutes
Total Time: 30 minutes

Ingredients
 

  • 1½ – 1¾ pounds (680 g) boneless, skinless chicken thighs (6-8 pieces)

Dijon marinade

  • 2 tablespoons (30 g) Dijon mustard
  • 2 tablespoons (30 g) tomato paste
  • 2 tablespoons fresh lemon juice
  • 2 tablespoons (30 ml) extra virgin olive oil
  • 1 tablespoon (15 g) chopped fresh thyme, or 1 teaspoon dried thyme
  • 1-2 finely chopped or grated garlic cloves
  • 1 teaspoon kosher salt
  • ½ teaspoon freshly ground black pepper, or to taste
  • ½ teaspoon crushed red chili pepper
  • ¾ cup (120 g) sliced shallots (about 2 medium)

Equipment

Instructions
 

  1. Preheat the oven to 425 degrees.
  2. Put 1½ – 1¾ pounds boneless, skinless chicken thighs (6-8 pieces) in a medium (about 3-quart capacity) baking dish. If your pan/dish is not nonstick, spray it with cooking spray or line with a sheet of aluminum foil for easier clean-up. Note: Your goal is for the chicken and shallots to roast in the oven while making a delicious pan sauce at the same time. If your pan is too large the juices will evaporate.

Mix the marinade

  1. Whisk together 2 tablespoons Dijon mustard, 2 tablespoons tomato paste, 2 tablespoons fresh lemon juice, 2 tablespoons extra virgin olive oil, 1 tablespoon chopped fresh thyme, 1-2 finely chopped or grated garlic cloves, 1 teaspoon kosher salt½ teaspoon freshly ground black pepper and ½ teaspoon crushed red chili pepper in a medium bowl.

Assemble and bake the chicken

  1. Pour the marinade over the chicken and turn the pieces over to coat. Scatter ¾ cup sliced shallots (about 2 medium) over the chicken, poking them in between the thighs here and there. Some of the unexposed shallots will crisp and brown, while the covered pieces will bake and soften.
  2. You can bake the chicken immediately or cover and refrigerate the chicken and marinade up to 24 hours ahead.
  3. Bake the chicken uncovered 25-30 minutes, until the chicken is opaque and the juices are bubbling. Serve warm.

Notes

  • Marinate the chicken overnight in the mustard mixture and bake directly from the fridge — add 5 minutes to the cook time if the chicken is cold.
  • Freeze the unbaked chicken in a freezer-safe bag. Thaw overnight in the fridge and bake.
  • Optional: Add 1 cup of cherry tomatoes to the baking dish with the marinated chicken — they will burst and release their juice into the sauce.

Nutrition per serving

Calories: 313kcal Carbohydrates: 11g Protein: 35g Fat: 14g Sodium: 891mg Fiber: 2g Sugar: 5g

Nutrition facts are calculated by third-party software. If you have specific dietary needs, please refer to your favorite calculator.

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