Preheat oven to 375 degrees.

In large bowl combine:

1 3/4 c. unsifted flour
1/2 c. firmly packed brown sugar
1/2 tsp. salt
1 c. quick-cooking oats
1/2 tsp. baking soda

Cut in:

1 c. cold butter

...until crumbly, reserving 1 1/2 cups crumb mixture, remainder on bottom of 13x9 baking pan. Bake 15 minutes. Add:

1 c. chopped walnuts

...to reserved crumb mixture.

In heavy saucepan, over low heat, melt, combine:

(stirring until smooth)

20 caramels
1 (14 oz.) can sweetened condensed milk

Spoon:

1 (21 oz.) can apple filling

...or topping over prepared crust.

Top with caramel mixture then reserved crumb mixture.

Bake 20 minutes or until set.

Cool; serve warm with ice cream.

Note: Start with the caramels right away as it takes awhile to melt.