Festive King’s Cake

Directions

1. In a large bowl, mix the sugar, yeast, salt and 2 cups flour. In a small saucepan, heat milk and butter to 120°-130°. Add to dry ingredients; beat on medium speed for 2 minutes. Add egg yolks; beat 2 minutes longer. Stir in enough remaining flour to form a soft dough.
2. Turn onto a floured surface; knead until smooth and elastic, 6-8 minutes. Place in a greased bowl, turning once to grease the top. Cover and let rise in a warm place until doubled, about 1-1/2 hours.
3. For filling, mix sugar and cinnamon in a small bowl. Punch down dough. Turn onto a lightly floured surface; roll into a 24x6-in. rectangle. Sprinkle cinnamon sugar lengthwise down one half of the dough. Fold dough lengthwise over filling; pinch seam to seal. Transfer to a greased baking sheet, seam side down. Shape into a ring, pinching ends together to seal. Cover with a kitchen towel; let rise in a warm place until doubled, about 1 hour.
4. Bake at 350° for 30-35 minutes or until golden brown. Remove from pan to a wire rack to cool completely. For topping, mix the confectioners' sugar, vanilla and enough milk to reach desired consistency. Spread over cake; sprinkle with colored sugars.