Yes, you can. To make it that way, then start by blending the spinach with the milk, flour, nutritional yeast and a pinch of salt. Cook the garlic in the pan as described and then pour the blended green sauce in the pan. Keep cooking until thickened. I would recommend adding more flour to the blender to make sure it thickens properly (include 1 extra tablespoon). Also, be sure to check out this vegan green sauce for pasta recipe!