1 (#2 1/2 size) can undrained crushed pineapple
2 1/2 c. rolled oats
3/4 c. flour
1 3/4 c. brown sugar
3/4 c. melted butter

Spread pineapple in 13"x9" or 8 1/2" x 11" pan. Mix all other ingredients together until crumbly and spread over pineapple. Bake 1 hour at 350 degrees until brown and crisp.