Melt butter or margarine in electric skillet.
Add chopped apple, sliced celery, and curry powder; cook till crisp-tender.
Reduce heat; add bouillon cube, water, macaroni from packaged mix, and salt.
Cook over medium heat till macaroni is tender, about 6 to 7 minutes, stirring occasionally.
Stir in milk and cheese from packaged mix.
Top macaroni-cheese mixture with drained shrimp.