Approximate cost/serving: This is especially cheap if you grow your own basil and strawberries, or you can also get your berries in season at a local farm. We got our asparagus at Costco for a great price, and often see them on sale at our local grocery store this time of year. The whole recipe cost me about $7 to make (buying the strawberries but using my basil) and came out to just $1.17 per serving.
Vegetarian/Gluten Free: Yes, and vegan and paleo too!