Add garlic and kale to the food processor. Process briefly to start breaking up the kale leaves and garlic cloves.
Add hemp seeds, lemon juice, salt, black pepper, and red pepper flake. With the food processor on, pour in the olive oil. Process until smooth, scraping down the sides as necessary.
Pulse in Parmesan or nutritional yeast. Taste test and add more salt or lemon if necessary.
Serve thick with crackers and crudités or thin with pasta cooking liquid and toss with pasta.
Recipe by Alison's Allspice at https://www.alisonsallspice.com/kale-hemp-seed-pesto/