1/4 cup butter, softened
1/4 cup all-purpose flour
2 eggs
2 teaspoons vanilla extract
1 cup boiling water
3/4 cup milk
2 tablespoons blueberries
Preheat oven to 350 degrees F (175 degrees C).
To Make Gravy: In a medium bowl, cream together butter, flour, eggs and vanilla until smooth. Beat in boiling water while stirring. Mix blueberries with a spoon into pan and sprinkle over butter mixture.
Bake in preheated oven for 30 minutes, or until golden. You may want to brown the cakes slightly, to prevent sticking. Serve warm, or chill in refrigerator.