In a blender, grind cashews and sunflower seeds into a fine powder. Add water, lemon juice, garlic, and salt. Blend until smooth.

Transfer sauce into a saucepan over medium heat and whisk as you bring to a boil. reduce heat to a simmer for 7 minutes, whisking regularly. stir in black pepper.

Serve over fettucine and enjoy!

This sauce can also be modified by adding tofutti american cheese slices and salsa to make a delicious nacho cheeze sauce!