Herb-Roasted Garlic Mashed Potatoes

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Creamy mashed potatoes infused with roasted garlic and fresh herbs for a restaurant-quality side dish. This american-inspired sheet pan ready in about 45 minutes pairs russet potatoes, unsalted butter, whole garlic cloves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 280 calories and feeds 6, 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.

★ 3.6 (14 ratings) Prep: 20 min Cook: 25 min Serves 6 American cuisine 280 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 400°F (200°C). Place 6 whole garlic cloves on a small baking sheet, drizzle with 1 tbsp olive oil, and roast for 20-25 minutes until golden and fragrant.
  2. Step 2: While the garlic roasts, peel and cube 2 lbs russet potatoes. Place in a large pot, cover with water, and add 1 tsp salt. Bring to a boil, then reduce heat and simmer for 15-20 minutes until tender.
  3. Step 3: In a large bowl, mash the cooked potatoes with 1/2 cup unsalted butter, 1/4 cup heavy cream, 1 tbsp chopped rosemary, 1 tbsp chopped thyme, and 1/2 tsp black pepper until smooth and creamy.
  4. Step 4: Stir in the roasted garlic (squeezed to remove cloves) and mix until fully incorporated. Taste and adjust seasoning as needed.

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Frequently asked questions

How long does Herb-Roasted Garlic Mashed Potatoes take to make?

Total time is about 45 minutes (20 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 Herb-Roasted 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 russet potatoes from drying out.

Can I substitute ingredients in Herb-Roasted 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 Herb-Roasted Garlic Mashed Potatoes for a different number of people?

The recipe is written for 6 servings. Multiply each ingredient by (your serving target / 6). 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 Herb-Roasted Garlic Mashed Potatoes?

American sheet pan 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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