Crockpot Strawberry Dessert

1 can Strawberry pie filling (21 oz)
1 pkg Strawberry cake mix (18 1/4 oz)
1/2 c melted butter or margarine
1/3 c chopped Black walnuts
Cool Whip

Place pie filling in your crockpot.

Combine dry cake mix and butter (mixture will be crumbly); sprinkle over filling.

Sprinkle with walnuts.

Cover and cook on low for 2 to 3 hours.

Serve in bowls.

Top with Cool Whip.