Mom's Strawberry Jello Salad

This is one of my mom's standard pot-luck, family reunion, special event recipes.

3 pkg. strawberry jello

2 c. boiling water

2 (10 oz.) frozen strawberries, thawed

1 (No. 2) can crushed pineapple, drained

3 bananas, quartered lengthwise and sliced

1 c. chopped pecans

1 pt. sour cream

Dissolve jello in boiling water; add fruits and nuts.  Place half of jello mixture in large casserole dish.  Congeal.  Spread sour cream on top: spoon remaining jello mixture over sour cream.  Let congeal.