Soak cashews, either overnight, or flash soak them in water you've boiled for 1 to 2 hours. Cook your pasta according to the instructions on the box. Drain the pasta but do not rinse.
Preheat your oven to 425°F. and prepare a baking sheet by lining with parchment paper. Toss your cauliflower florets in first amounts of oil, cumin, turmeric, salt, and pepper. Spread the florets out on the baking sheet so that they all have room to breathe, and roast in the oven, tossing a few times throughout, for about 40 minutes or until the florets are golden and crispy.
For the sauce, start by adding your cashews, nutritional yeast, lemon juice, garlic cloves and second amounts of oil, cumin, turmeric, salt and pepper to your blender. Blend to incorporate the ingredients slightly. It should not look cute at this point. Now, add the broth. Blend until the sauce is completely smooth. Season it to taste with salt and pepper.
Add the sauce to your cooked pasta. Mix until the sauce is well incorporated into the pasta and its crevices. Top the mac n cheese with the roasted cauliflower. Enjoy!
This nutritional information refers to each serving of the entire recipe and not just the products used as ingredients.