Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper.
Toss the cauliflower florets with buffalo sauce until well coated. Spread them out on the baking sheet and roast for 20-25 minutes, until tender and slightly crispy.
While the cauliflower is roasting, cook the elbow macaroni according to package instructions. Drain and set aside.
In a blender, combine soaked cashews, nutritional yeast, almond milk, garlic powder, onion powder, salt, and black pepper. Blend until smooth and creamy.
In a large pot, combine the cooked macaroni and the cashew cheese sauce. Stir until the macaroni is well coated.
Gently fold in the roasted buffalo cauliflower. Serve hot and enjoy!