Crush the whole peeled tomatoes by hand, reserving the juices. Use half of the 28-ounce/795g can.
Bring a medium saucepan to medium heat and add the 2 tablespoons extra virgin olive oil. Once the oil is hot, add the shallots and season with a pinch of salt, cook, stirring often to prevent them from browning, until soft and translucent, about 4-6 minutes. Add the garlic and cook for another 2-3 minutes until soft and golden, again stirring often.
Add the rosemary sprig, bay leaf, and dried chili pepper (or red pepper flakes). Cook, stirring until fragrant, about 30 seconds.
Once the aromatics have cooked down, add the crushed tomatoes and half of the cannellini beans. Season to taste with salt and cook, stirring occasionally, until the tomatoes have thickened slightly and are starting to turn jammy, 6-8 minutes
While the tomatoes are cooking, make the white bean puree. Add the remaining half of the cannellini beans to a food processor. Add the plant-based milk, nutritional yeast, lemon zest, lemon juice, miso paste (if using), 1/4 tsp kosher salt and black pepper to taste. Blend until the mixture is completely pureed and smooth. Taste for seasonings, adding more salt or lemon juice as needed.
Once the tomatoes have cooked down, add the 3 cups (720 mL) water and the white bean puree to the saucepan. Increase the heat to medium-high and bring to a rapid simmer. Add the pasta and cook, stirring every few minutes to prevent it from sticking, until the pasta is al dente and the sauce has thickened, 12 to 16 minutes, depending on your pasta variety. The finished dish should be creamy and soup-like. Season with salt and black pepper to taste.
Divide between 2 or 3 bowls and drizzle with more extra virgin olive oil and black pepper on top. Garnish with chopped parsley, if using.