Sweet Wine and Red Grape Muffins

from "food blogga" - http://foodblogga.blogspot.com/2009/08/red-grapes-in-muffins-oh-yeah.html

• Ready In: 35 mins
• Serves: 11
• Yields: 11 muffins

Ingredients

• 1 1⁄2 cups  plus 1 tablespoon all-purpose flour, divided
• 1 1⁄2 teaspoons baking powder
• 1⁄2 teaspoon baking soda
• 1⁄4 teaspoon salt
• 1⁄2 cup unsalted butter, softened
• 2⁄3 cup granulated sugar
• 2  tablespoons granulated sugar, divided
• 2  large eggs
• 1  tablespoon orange zest
• 2⁄3 cup sweet wine (such as Rieisling or Muscata)
• 1  cup  seedless red grapes

Directions

1. Place a rack in the middle of the oven, and preheat to 375 degrees F.
2. Whisk together flour, baking powder, baking soda, and salt.
3. Beat butter with 2/3 cup sugar using an electric mixer on medium speed, until light and fluffy. Add eggs one at a time, beating well after each addition. Beat in zest.
4. Add flour mixture in two batches, alternately wtih wine, beginning and ending flour, mixing until just incorporated.
5. Toss grapes with remaining tablespoon flour, then fold into batter.
6. Divide batter among muffin cups. Sprinkle with remaining 2 tablespoons sugar. Bake until golden and springy to the touch, 18-20 minutes. Cool in pan 5 minutes, then loosen with a knife, and remove. Cool to warm, 5-10 minutes more. Dust with confectioners' sugar before serving.