Lemon-Rosemary Grilled Chicken with Garlic Mashed Potatoes

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

Juicy grilled chicken marinated in lemon and rosemary paired with creamy garlic mashed potatoes for a comforting meal. This American-inspired chicken recipe, ready in about 65 minutes, pairs boneless skinless chicken breasts, lemon juice, olive oil for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 520 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: 40 min Cook: 25 min Serves 4 American cuisine 520 cal/serving
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Ingredients

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Instructions

  1. Step 1: In a bowl, whisk together 1/4 cup lemon juice, 3 tbsp olive oil, 2 tsp chopped fresh rosemary, 3 minced garlic cloves, 1 tsp black pepper, and 1 1/2 tsp salt. Place 4 boneless skinless chicken breasts (6 oz each) in a shallow dish and pour marinade over. Cover and refrigerate for at least 30 minutes.
  2. Step 2: While chicken marinates, place 2 lbs peeled and quartered russet potatoes in a large pot. Cover with cold water and add 1 tsp salt. Bring to a boil over high heat and cook for 15-18 minutes until potatoes are fork-tender.
  3. Step 3: Drain potatoes and return to pot. Add 4 tbsp butter, 1/2 cup warmed milk, and 2 minced garlic cloves. Mash with a potato masher until smooth and creamy. Season with additional salt and pepper to taste.
  4. Step 4: Preheat grill or grill pan to medium-high heat. Remove chicken from marinade and grill for 6-7 minutes per side until internal temperature reaches 165°F and grill marks appear.
  5. Step 5: Serve grilled chicken alongside garlic mashed potatoes, spooning any resting juices over chicken for extra flavor.

Frequently asked questions

How long does Lemon-Rosemary Grilled Chicken with Garlic Mashed Potatoes take to make?

Total time is about 65 minutes (40 min prep + 25 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 Lemon-Rosemary Grilled Chicken with Garlic Mashed Potatoes?

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 lemon juice from drying out.

Can I substitute ingredients in Lemon-Rosemary Grilled Chicken with Garlic Mashed Potatoes?

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 Lemon-Rosemary Grilled Chicken with Garlic Mashed Potatoes 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 Lemon-Rosemary Grilled Chicken with Garlic Mashed Potatoes?

American chicken 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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