In the past, if you wanted to serve pesto, you had to make it from scratch. Now it is available in plastic containers in the refrigerated section of many markets. Avoid the pesto sold in glass jars on store shelves, as the fresh basil flavor is lost.
A traditional Clafoutis is made with a batter quite similar to a pancake recipe. However, this savory version is lighter on the flour aspect, and heavier on the eggs. Being gluten-free, cornstarch is used in place of flour, but you can substitute all-purpose flour instead.