Cut the top off the garlic heads, place on a sheet of aluminum foil, and drizzle the olive oil on top. Sprinkle with salt and pepper. Wrap foil tightly around bulbs. Roast for 40-45 minutes.
Remove from the oven and let cool, then press the cloves out of the peels into a small bowl. Mash with a fork and set aside.
Place the potatoes in a large pot with water to cover them. Add in 1 tablespoon salt and bring to boil over medium heat. Boil until potatoes are fork-tender for about 15-20 minutes. Drain and place back into the pot.
In a small bowl add the half n half and butter and heat in the microwave for 1-2 minutes until warm.
Using a potato masher, mash the potatoes and add in the garlic and warm half-n-half, butter mixture. Add more salt and pepper to taste.
Serve warm and garnish with fresh chopped parsley.
Video
Notes
Yukon gold potatoes will also work.Half n Half can be found in the milk section of your grocery store. Or you can simply combine 1/2 milk and 1/2 heavy cream to make half n half.