Bring a large pot of salted water to a boil. Add the pasta and cook until just al dente, about 8-10 minutes. Drain and set aside.
While the pasta cooks, heat olive oil in a skillet over medium heat. Add minced garlic and sauté until fragrant, about 1-2 minutes, until it turns golden and smells wonderful.
Add the chopped ripe tomatoes to the skillet. Cook for 5-7 minutes, stirring occasionally, until the tomatoes soften and release vibrant juices that start to thicken into a sauce base.
Drain your soaked cashews and transfer them to a high-speed blender. Add a cup of water, a pinch of salt, and lemon juice if using. Blend until completely smooth and silky, about 1-2 minutes.
Pour the cashew cream into the skillet with the tomato mixture. Stir well and simmer on low heat for about 10 minutes, allowing the flavors to meld and the sauce to thicken slightly. Season with salt, pepper, and nutritional yeast.
Add the cooked pasta directly into the skillet with the sauce. Toss gently to coat each strand evenly, adding a splash of reserved pasta water if needed to loosen the sauce to your desired consistency.
Turn off the heat and stir in freshly chopped basil for a burst of herbal aroma. Let sit for a minute to allow the basil to release its fragrant oils.
Serve the pasta hot, garnished with additional basil or nutritional yeast if desired. Enjoy the velvety, vibrant dish immediately for the best flavor and texture.