1In food processor, break up angel food cake into small pieces. Cover; process with on-and-off pulses in batches until crumbs form. Do not over process (to avoid cake sticking). Place in large bowl.
2In medium bowl, stir yogurt, cream cheese and powdered sugar until smooth. Pour into cake crumb bowl. Mix well. Shape mixture into 24 golf ball-size pops, about 2 tablespoons each. Poke lollipop stick into each pop. Roll pops in sprinkles. Refrigerate.