Rosemary-Spiced Chicken Thighs with Sweet Potato Mash

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Juicy chicken thighs seasoned with rosemary and garlic, paired with creamy sweet potato mash for sustained energy and balanced blood sugar. This american-inspired whole30 ready in about 55 minutes pairs (bone-in, skin-on) chicken thighs, medium sweet potatoes, olive oil for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 480 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 10 min Cook: 45 min Serves 4 American cuisine 480 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 375°F. Pat chicken thighs dry. Rub with 1 tbsp olive oil, minced garlic, 1/2 tsp salt, 1/4 tsp pepper, and 1/2 tbsp chopped rosemary.
  2. Step 2: Place chicken skin-side up on a parchment-lined baking sheet. Bake for 30 minutes until golden and internal temperature reaches 165°F.
  3. Step 3: Peel and chop sweet potatoes into 1-inch cubes. Boil in salted water for 15 minutes until fork-tender.
  4. Step 4: Drain sweet potatoes and mash with remaining 1 tbsp olive oil, 1/2 tsp salt, 1/4 tsp pepper, and remaining 1/2 tbsp rosemary until smooth and creamy.

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Frequently asked questions

How long does Rosemary-Spiced Chicken Thighs with Sweet Potato Mash take to make?

Total time is about 55 minutes (10 min prep + 45 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Rosemary-Spiced Chicken Thighs with Sweet Potato Mash?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep medium sweet potatoes from drying out.

Can I substitute ingredients in Rosemary-Spiced Chicken Thighs with Sweet Potato Mash?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Rosemary-Spiced Chicken Thighs with Sweet Potato Mash for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Rosemary-Spiced Chicken Thighs with Sweet Potato Mash?

American whole30 like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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