Place the basil, parmesan cheese, pumpkin seeds, garlic and salt in a food processor or blender. Add half of the olive oil and allow the machine to combine the ingredients.
Slowly add the remaining olive oil while the food processor is running.
Pause to scrape down the sides of the bowl or blender and then process once more. Adjust the taste to your liking (add more cheese to make it creamier, salt to cut the bitterness of the basil or oil to thin out the pesto).
Keep in an air-tight container in the fridge for up to 1 week and/or store some in an ice cube tray in the freezer! (This way you can have individual portions ready to go).
Serve over pasta, pizza, sandwiches, grilled vegetables or salad. Enjoy!