1Mix flour, cocoa powder, baking soda & salt. Set aside.
2Beat butter & sugar in large bowl with mixer on medium speed 5 minutes until light & fluffy. Beat in eggs, 1 at a time. Mix in sour cream, milk, food color, & vanilla. Gradually beat in flour mixture on low speed until blended. Don't overbeat. Spoon batter into 30 paper-lined muffin cups, filling each cup 2/3 full.
3Bake in preheated 350 degrees oven 20-25 minutes or until toothpick inserted into cupcake comes out clean. Cool in pans on wire rack 5 minutes. Removed from pans; cool completely. Spread with Vanilla Cream Cheese Frosting.
4Vanilla Cream Frosting: Beat cream cheese, butter, sour cream & vanilla in large bowl until light & fluffy. Gradually beat in 1 box confectioner's sugar on medium speed until smooth. Ice cupcakes with frosting.
Keep cupcakes refrigerated.