Place the chopped cauliflower on a sheet pan and toss with 2 Tbsp. olive oil, salt and pepper.
Bake for 10-14 minutes, depending on the size of the head of cauliflower. It should be caramelized, but still have a little bite to it.
While the cauliflower is being baked, combine the sour cream, crumbled feta, 1 Tbsp. olive oil, and salt and pepper. Finish with 4-5 drops of truffle oil. Cover the opening of the bottle of truffle oil with your finger to ensure you only get a few drops. A little goes a long way!!