I'm not sure this is the one you are looking for, but this one I use a lot:
1 large can chunk pineapple (drain, keep juice)
1 cup sharpe cheddar cheese
1/4 cup sugar
3 tbsp flour
3 tbsp pineapple juice
1/2 cup crushed ritz cracker
1/4 cup margarine (melt)
Mix pineapple & cheese
Mix sugar, flour and juice and pour over pineapply and cheese
Top with ritz crackers and margarine
Bake 350 for 20-30 minutes