I found this recipe at How To Eat A Cupcake
Blueberry Cupcakes (plus her specific directions)
1/2 cup (1 stick) unsalted butter, room temperature
1 cup sugar
1 1/2 cups all-purpose flour
1 teaspoon baking powder
1/2 teaspoon salt
1/3 cup milk
2 teaspoons vanilla extract
1 1/2 cups fresh or frozen blueberries
Preheat the oven to 350 degrees F. Insert liners into a regular muffin pan.
With an electric mixer on medium speed, cream the butter and sugar together in a large bowl until light and fluffy, about 3-5 minutes. Add the eggs (one at a time) to the creamed mixture and beat well.
I frosted them with a regular vanilla frosting. She made an awesome looking blueberry buttercream, but I was already out of blueberries. YUM! Not blueberry muffins, blueberry cupcakes!