Add the cauliflower florets and a pinch of salt to a boiling pot of water. Cook for 10 minutes or until tender. In a skillet, drizzle in olive oil and minced garlic. Cook the garlic for 1-2 minutes or until fragrant. Remove from heat.
Drain the cauliflower well, pat dry if needed. Transfer the cooked cauliflower florets, minced garlic, Parmesan cheese, 2 tablespoons of unsalted butter, heavy cream, kosher salt, and ground white pepper to a blender or food processor. Blend until smooth.
Transfer to a serving bowl. Top off the dish with the remaining unsalted butter and fresh thyme. Serve hot.
Keyword Cauliflower mash, gluten-free side dish, Mashed cauliflower