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Preheat the oven to 350.
In a large mixing bowl, combine all the dry ingredients and set aside.
In a small saucepan, reduce the port over medium heat to 1/4 cup.
Cool to room temperature.
Add the port and remaining ingredients, except the blueberries, to the dry mixture, one at a time, stirring constantly, until combined and smooth.
Gently fold in the blueberries.
Lightly spray or wipe a 7 x 11 inch glass baking pan with vegetable oil.
Pour the batter into the pan with and bake for 45 minutes, or until a toothpick inserted in the center comes out clean.
Serve warm from the oven or cool to room temperature.