In a small saucepan over low heat, combine raisins and orange juice until warmed, about 5 minutes. Remove from heat; let stand 10 minutes. Drain the raisins from the orange juice, discarding the orange juice; set aside.
In a large bowl, combine flour, orange zest, cinnamon, salt and nutmeg; set aside.
Combine milk, yeast and 1 teaspoon sugar in a small bowl; let stand until foamy, about 5 minutes.
In the bowl of an electric mixer fitted with paddle attachment, beat butter and remaining 1/2 cup sugar on medium speed until light and fluffy, about 2 minutes. Beat in eggs, vanilla and raisins until well combined.
Using the dough hook, add flour mixture and yeast mixture until a soft, smooth ball of dough is formed. The dough should feel elastic and slightly tacky to the touch. Increase speed to medium-high and beat for 3-5 minutes.
Lightly oil a large bowl or coat with nonstick spray; place dough in bowl, turning to coat. Cover with a clean dishtowel and let stand in a warm spot until dough has doubled in size, about 45 minutes to 1 hour.
Gently deflate dough by punching down. Roll into a 15-inch rope; cut into 15 1-inch pieces, pressing each piece into a disk, then shaping into a ball.
Lightly oil a 9×13 baking dish or coat with nonstick spray. Place dough balls into the prepared baking dish. Cover with a clean dishtowel and let stand in a warm spot until dough has doubled in size, about 30-45 minutes.
for the cross
In a small bowl, whisk together flour and water until a smooth paste is formed. Transfer to a Ziploc bag, making a small cut in the corner of the bag. Pipe mixture over each dough ball, creating a thick cross.
Preheat oven to 350 degrees F. Place into oven and bake until golden brown, about 22-25 minutes; brush tops with melted butter.