Get out your muffin tin and bake the best peanut butter cookies you've ever tasted. Each one contains a chocolate peanut butter cup inside.
Heat oven to 350° F. Remove wrappers from peanut butter cups. Line small muffin cups (1-3/4 inches in diameter) with paper bake cups.
Place butter and peanut butter chips in large microwave-safe bowl. Microwave at MEDIUM (50%) 1 minute; stir. If necessary, microwave at MEDIUM an additional 10 seconds at a time, stirring after each heating, until chips are melted and mixture is smooth when stirred. Add brown sugar, egg and vanilla, beating until well blended. Stir in flour, baking soda and nuts, blending well.
Shape dough into 40 equal (about 1 inch) balls. Roll in granulated sugar; place one in each paper-lined muffin cup.
Bake 10 to 12 minutes or until lightly browned. Remove from oven; immediately press peanut butter cup into center of each cookie. Cool completely in muffin pan. Makes 40 cookies.
* The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet 2,000 calories a day is used for general nutritional advice.