*I like my pecans toasted. You can skip this step if you prefer raw pecans, or to make this no-bake.* Preheat oven to 350°F. Place pecans on a baking sheet and bake for just a few minutes, stirring each minute, until the pecans are lightly toasted. Once you smell them, they’re done. Do not walk away from the oven for any reason or they’ll burn! Nuts go from raw to burned in seconds, so as soon as you smell them, remove them from the oven. Pour them into a large bowl and let them cool.
Place chocolate chips, peanut butter, and butter in a medium sized bowl. Heat in the microwave on high power, in 30 second increments, stirring between each, until the chocolate is melted and smooth. Pour over pecans and toss to coat.
Place 1 cup powdered sugar in a large gallon size bag. Pour pecans in the bag, seal, and shake to coat. Turn out onto a cookie sheet covered with parchment paper and let cool. If desired, shake with another cup of powdered sugar before serving.