INGREDIENTS
1 18 1/4 ounce package
yellow cake mix
1/2 cup
reduced-fat buttermilk
1
egg, lightly beaten
1 tbsp
canola oil
1 8 ounce package
reduced-fat cream cheese (Neufchatel)
3/4 cup
confectioners’ sugar
1/4 cup
plain low-fat (2%) Greek-style yogurt
1
large egg, at room temperature
1 tsp
vanilla extract
1 tsp
melted butter