Ingredients Roasted Garlic: 2 heads garlic 1 tbsp olive oil (for roasting) 3 tbsp olive oil (for serving) Mashed Potatoes: 3 lbs Russet potatoes (or Golden Yukon, peeled and quartered) 1.5 cups heavy cream 1 cup Parmesan cheese (shredded) 4 tbsp butter (salted) ¼ tsp salt 3 tbsp fresh t…