01 -
Preheat oven to 200°C. Slice the top from each garlic head to expose the cloves. Remove any loose papery skins.
02 -
Place garlic heads on a sheet of foil. Drizzle exposed cloves with 1 tablespoon olive oil and wrap tightly. Roast for 45 minutes until golden and softened. Cool, then squeeze out the garlic cloves into a small bowl.
03 -
Add 3 tablespoons olive oil to the bowl with the roasted garlic to create a flavorful infusion for serving.
04 -
While garlic roasts, place peeled and quartered potatoes in a large pot. Cover with cold water by 2 to 5 centimeters. Bring to a boil and cook for 15–20 minutes until fork-tender. Avoid overcooking.
05 -
Drain potatoes thoroughly. Return to a bowl and mash using a potato masher or preferred tool until smooth.
06 -
In the empty warm pot, heat the heavy cream. Add the mashed potatoes while hot, along with Parmesan cheese, butter, and salt. Stir constantly over low-to-medium heat for about 5 minutes until creamy and incorporated.
07 -
Season with additional salt if needed. Adjust consistency with extra cream if desired.
08 -
Transfer mashed potatoes to serving dish. Swirl in garlic-infused olive oil or extra melted butter. Top with roasted garlic cloves, fresh thyme, and freshly ground black pepper. Serve immediately.