Frozen Banana Salad (BJ's)

5 lg. ripe bananas, mashed
4 T. lemon juice
1½ cups sugar
1 pint sour cream
1 cup pecans, ground
½ cup chopped Maraschino cherries
1 lg. can crushed pineapple, drained
1 lg. 12-oz. Cool Whip

Mash bananas and add lemon juice.  Add sugar and sour cream; mix well.  Add pineapple, cherries and pecans; mix well.  Fold in Cool Whip and pour into long, shallow oblong pan.  Cover and freeze.