1. In a blender or food processor, add basil, garlic cloves, olive oil, roasted garlic, nutritional yeast, garlic salt, and pepper. Blend with up to 1/2 cup water as needed to get everything mixed. The pesto should be more of a sauce than a paste.
2. Transfer to saucepan and mix in onions. Heat the sauce until the onions are cooked through.
This would be good with pasta, you could add artichokes, sundried tomatoes, olives, etc. Or, it'd be good as a spread in a sandwich.
Source of recipe: I've been craving pesto and decided to make a vegan version.