Basil-Walnut Pesto - cooking recipe

Ingredients

2 cups packed basil leaves (approx. 2 oz)
1/3 cup olive oil
1/2 cup finely chopped walnuts
2 cloves garlic, minced or crushed
1/2 cup grated parmesan cheese
2 tablespoons softened butter (optional)
1/2 teaspoon salt (optional)

Preparation

Place basil, olive oil, walnuts, garlic and salt (if using) in food processor.
Blend until thoroughly combined.
Add Parmesan and butter (if using) and blend 5-10 seconds more.
Just before serving, add 2 Tbsp of hot pasta water from cooked pasta.
Serve over pasta with bread and salad.