For the Muffins
1/4 cup butter
1/4 cup vegetable oil
1/2 cup granulated sugar
1/3 cup brown sugar
2 large eggs
1 1/2 teaspoons baking powder
1/4 teaspoon baking soda
2 teaspoons ground cinnamon
1 teaspoon ground ginger
1 teaspoon ground cardamom
1/2 teaspoon ground allspice
1/4 teaspoon finely ground black pepper
3/4 teaspoon salt
1 teaspoon vanilla extract
2 2/3 cups all-purpose flour
1 cup milk
For the Glaze
3 tablespoons butter; melted
1 cup confectioners’ sugar; sifted
1/4 teaspoon cinnamon
1/8 teaspoon ground ginger
1/8 teaspoon ground cardamom
1/8 teaspoon ground allspice
3/4 teaspoon vanilla
1 tablespoon milk