Pre heat over to 425F and bring a large pot of salted water to a boil.
chop the cauliflower into florets and lay on a baking sheet with the broccolini. Cover in 1-2 tsp oil, a pinch of pink salt and toss to coat evenly. Roast for 15 minutes, then remove the broccolini from the pan, set aside. Cook Cauliflower another 10-15 minutes. Remove from oven and set aside.
Meanwhile cook your pasta following the directions on the package.
Heat 1 tsp oil in a medium skillet over medium high heat. Chop onion, shallots and garlic. Once oil is hot add the onions and sautee for 5-6 minutes, then add the shallots and cook for another 2-3 minutes, stirring occasionally. Add a pinch of pink salt and stir again.
Add in the garlic, stir gently and cook until fragrant. BE CAREFUL not to burn the garlic. About 30-45 seconds. Remove from the heat and transfer to a high speed blender. I used Vitamix.
Then add in your cauliflower and 1/4 cup the vegetable broth. Blend on high using your tamper. Stop and scrape down the sides if necessary. Then add another 1/4 cup broth. Blend again. Check the consistency, it should be like creamy mashed potatoes. Add more broth if needed.
Next while the blender is on medium, slowly add in the truffle infused oil and the olive oil then turn up to high to fully emulsify the oil in to the sauce.
Stop and check the consistency. You want it to be think, barely pourable and nearly dripping of the back of a spoon but not quite. If its too thick then add in more vegetable broth, 1/4 cup at a time and blend well.
Add in the white wine vinegar, nutritional yeast and salt. Blend and adjust to your tastes.
Trasnfer you pasta to a large serving dish, cover in the sauce, and add in the broccolini. Sprinkle with crushed red pepper if you're feeling fancy.