Cover cookie sheet or tray with wax paper.

Place chocolate in medium microwave-safe bowl. Microwave at MEDIUM (50%) 1 minute; stir. If necessary, microwave at MEDIUM an additional 15 seconds at a time, stirring after each heating, until chocolate is melted and smooth when stirred.

Immediately place peanut butter chips and shortening in second microwave-safe bowl. Microwave at MEDIUM 1 minute; stir. If necessary, microwave at MEDIUM an additional 15 seconds at a time, stirring after each heating, until chips are melted and mixture is smooth when stirred; stir in peanuts.

Alternately spoon above mixtures onto prepared tray; swirl with knife for marbled effect. Gently tap tray on countertop to even out thickness of mixture. Refrigerate about 1 hour or until firm. Break into pieces. Store in cool, dry place. About 1 pound candy.

*While it's not necessary to toast almonds, if you'd like to do so: Heat oven to 350°F. Spread almonds in thin layer in shallow baking pan. Bake 8 to 10 minutes, stirring occasionally, until light golden brown; cool.