Preheat oven to 410°.
Delicious plain or with a scoop of vanilla ice cream.
With an electric beater, beat butter and sugar until light and fluffy.
Continue beating, adding the eggs one at a time, followed by the cream cheese and vanilla, and beating until smooth.
Add the almond powder/meal and blend well. Gently fold in the blueberries.
Turn batter into a 9 inch baking dish. Bake for 25 minutes. Top will be golden brown and the gratin will be moist and yummy! Serve warm or room temperature.