HEAT oven to 350ºF.
PREPARE cake batter as directed on package. Add dry pudding mix and pumpkin; mix well. Spoon into 24 paper-lined muffin cups.
BEAT cream cheese with mixer until creamy. Blend in sugar and egg; spoon over batter.
BAKE 18 to 21 min. or until toothpick inserted in centers comes out clean. Cool 5 min.; remove to wire racks. Cool completely.