1 yellow cake mix
1 egg
1/3 c. butter, softened
3 c. mini marshmallows
1 (10 oz.) bag Reese's peanut butter chips
2/3 c. corn syrup
1/4 c. butter
2 c. roasted peanuts
3 c. Rice Krispies

Mix cake mix, egg and 1/3 cup butter at low speed until crumbly. Press into 9 x 13-inch pan.

Bake 12 to 18 minutes at 350°F until golden brown.

Pour the marshmallows over the top and return to oven for 1 to 2 minutes until marshmallows begin to puff.

Heat until melted the Reese's peanut butter chips, corn syrup and 1/4 cup butter. Add the roasted peanuts and Rice Krispies to melted mixture. Pour over marshmallows while warm. Refrigerate until firm.