Hawaiian Pistachio Salad

1 (3 1/2 oz.) pkg. pistachio pudding mix
1 (13 1/2 oz.) ctn. Frozen whipped topping, thawed
1 (8 1/4 oz.) can crushed pineapple, drained
1 (11 oz.) can Mandarin orange sections, drained
1 c. miniature marshmallows
1 (12 oz.) ctn. cottage cheese

Fold pudding mix into whipped topping. Fold in remaining ingredients. Chill thoroughly. Yield: 10-12 servings.