Make cashew cream: Blend soaked cashews, water, lemon juice, and salt until smooth. Set aside.
Cook pasta: Boil in salted water until al dente. Save ½ cup pasta water, then drain.
Sauté aromatics: Heat olive oil in a pan. Cook onions until soft, then add garlic. Stir for 1 minute.
Build the base: Add tomato paste and crushed tomatoes. Let them cook until thickened, about 5 minutes.
Pour in vodka: Stir and let it simmer for 2 minutes, burning off the alcohol while deepening the flavors.
Add cashew cream: Mix well and simmer for 3 minutes. Stir in nutritional yeast, salt, and black pepper.
Combine everything: Toss in pasta and a splash of reserved pasta water. Stir until sauce coats every bite.
Serve immediately: Garnish with basil and red pepper flakes. Enjoy before someone else steals your plate.