Step 1

For the cake: Adjust oven rack to lower-middle position and heat oven to 325 degrees. Prepare angel food cake batter according to directions. Place one-third of batter (about 3 cups) in medium bowl and set aside. Gently scrape remaining batter into 12-cup ungreased tube pan. Add yolks and extract to reserved batter and gently fold mixture with rubber spatula until combined. Scrape into tube pan over top of plain batter. Pull spatula or knife through batters. Bake until toothpick inserted into center of cake comes out clean with no crumbs attached, 40 to 45 minutes. Cool, inverted in cake pan, to room temperature, about 3 hours. To unmold, run knife along interior of pan and invert cake onto serving platter.

Step 2

For the glaze: Whisk cream cheese and orange juice concentrate in medium bowl until smooth. Add confectioners’ sugar and continue whisking until no lumps remain. Drizzle over top of cooled cake, letting glaze drip down sides. Let glaze set, about 30 minutes, and decorate with sugared orange slices, if using. Serve.