SWEET WINE AND RED GRAPE MUFFINS

Steps:

• Place a rack in the middle of the oven, and preheat to 375 degrees F.
• Whisk together flour, baking powder, baking soda, and salt.
• 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.
• Add flour mixture in two batches, alternately wtih wine, beginning and ending flour, mixing until just incorporated.
• Toss grapes with remaining tablespoon flour, then fold into batter.
• 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.