Of course, there isn't any food that's just Pagan. But there is some food that's common to the Pagan community, that most pagans use for their rituals, and which is especially good for grounding your energy after a lot of ritual celebration.
Crescent Cookies
Non-alcoholic Mead
Beltane Marigold Custard
Crescent Cakes 1 cup firmly ground almonds Combine almonds, flour, sugar and
extract until thoroughly mixed. with the hands, work in butter
and egg yolk until well-blended. Chill dough. Preheat oven to 325
degrees F. Pinch off pieces of dough about the size of walnuts
and shape into crescents. Place on greased sheets and bake for
about 20 minutes. Serve during Simple Feast, especially at
Esbats.
(from http://weygold.tierranet.com/Book_of_Shadows/Recipes/Crescent_Cakes.html)
1 1/4 cups flour
1/2 cup confectioner's sugar
2 drops almond extract
1/2 cup butter, softened
1 egg yolk