Make the cashew Alfredo sauce:
Drain soaked cashews. In a blender, combine cashews, garlic, almond milk, nutritional yeast, lemon juice, salt, and pepper. Blend until completely smooth and creamy.
Prepare the pasta:
Heat olive oil in a skillet over medium heat. Add rinsed hearts of palm noodles and sauté for 2–3 minutes.
Combine and serve:
Pour the sauce over the warm pasta, stir gently until evenly coated, and heat through for 1–2 minutes. Serve warm, garnished with parsley or a sprinkle of nutritional yeast.