For the Pea Pesto
Microwave or on stovetop, defrost frozen peas with butter and water.
Place all ingredients in a blender or food processor and blend until creamy, adding truffle oil if using.
For the Feta Crema
For feta crema: In a small bowl, stir ingredients together until smooth. Set aside.
For the Cauliflower
Preheat oven to 375 degrees. Toss cauliflower with olive oil, salt and pepper. Spread on a baking sheet, and roast until edges are browned, about 12 minutes. Serve with pea pesto and feta crema, olives and salted almonds.