Herb-Roasted Garlic Mashed Potatoes

By AislePrompt Editorial · Published 2026-03-30 · Updated 2026-03-30

How this recipe was made — this recipe was drafted by AislePrompt's AI-assisted pipeline from technique templates and USDA-sourced nutrition data, and published by AislePrompt Editorial — see how AislePrompt recipes are developed and reviewed.

Creamy mashed potatoes infused with roasted garlic and fresh herbs for a restaurant-quality side dish. This American-inspired sheet-pan recipe, 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.

Prep: 20 min Cook: 25 min Serves 6 American cuisine 280 cal/serving

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Ingredients

2 lbs russet potatoes
1/2 cup unsalted butter
6 whole garlic cloves
1 tbsp fresh rosemary
1 tbsp fresh thyme
1 tsp salt
1/2 tsp black pepper
1/4 cup heavy cream

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Instructions

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.
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.
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.
Step 4: Stir in the roasted garlic (squeezed to remove cloves) and mix until fully incorporated. Taste and adjust seasoning as needed.