Melt chocolate chips in bowl in microwave. Mix in peanut butter, set aside a few tablespoons(maybe 4-5). Add nuts and marshmellows, saving a few Tb. Of nuts, and a handful of marshmellows. Lay wax paper in bottom of a 8x8 or 9x9 pan, and spray with non-stick spray. Sprinkle most of the marshmellows on bottom of pan, and pour fudge mixture on top. Sprinkle remaining nuts and marshmellows on top. Drizzle with the rest of the chocolate chips/peanut butter. Refrigerate until set, and enjoy!! Will freeze well also.