Easy homemade basil pesto sauce. Also delicious with other herbs (like parsley or cilantro) or even greens like kale.
Add basil and 1/4 cup Parmesan cheese and pulse until blended.
With food processor running drizzle in olive oil and blend until incorporated.
Add additional Parmesan cheese, salt and pepper if desired.
Store in an airtight container in the fridge for a few days. Or you can freeze in ice cube trays, then put frozen cubes in zip to lock storage bags.