Instructions: Preheat oven to 350 degrees. Coat a 9-by-13 inch thick metal baking pan with nonstick cooking spray.

Heat butter in microwave in 1 cup glass measure on lowest setting just until melted (about 30 seconds). Stir sour cream and chocolate syrup into the glass measure with the melted butter; mix until smooth.

Put cake mix in a large mixing bowl. Drizzle butter mixture over the top and beat on low until cake mix is nicely moistened but still crumbly (about 30 seconds). Press evenly in bottom of prepared pan.

Sprinkle the top evenly with butterscotch chips, chocolate chips, coconut and nuts. Pour sweetened condensed milk evenly over all ingredients.

Bake until light golden brown (about 30 minutes). Cool completely. Cut into bars.

Note: Use real butter or stick margarine. Do not substitute reduced-fat spreads; their higher water content often yields less-satisfactory results.

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