PREHEAT oven to 350°F. Beat egg yolks, milk and salt in medium bowl with wire whisk until well blended. Add cereal; mix well. Let stand 10 min. Stir in corn, butter and baking powder; set aside.
BEAT egg whites in separate medium bowl with electric mixer on high speed until foamy. Gradually add sugar, beating until stiff peaks form. Add to cereal mixture; stir gently until well blended. Spoon evenly into 12 greased or paper-lined medium muffin cups.
BAKE 18 to 20 min. or until toothpick inserted in centers comes out clean.