In a steamer basket, steam roughly-chopped zucchini, broccoli, and cauliflower. Remove from heat and add spinach and two garlic cloves, cover, and let steam off of the heat for another 5 minutes until tender. Transfer all components including one raw garlic clove, lemon juice and basil to blender or food processor and blend until creamy. Slowly add in olive oil and continue to blend until you achieve a luscious, creamy texture. Season with sea salt and pepper to taste. If using, add nutritional yeast and blend again. Serve on sprouted toast or over pasta.