Making your own chocolate peanut butter cups can be satisfying and fun to do. They're easy to make, all you need is chocolate, peanut butter, and powdered sugar to have homemade peanut butter and chocolate goodness anytime. People have used muffin tins with cupcake liners to chill their creations and make them look like a traditional Reese's Peanut Butter Cup. They sound fancy, like a tool a baking scientist would use, but silicon molds are cheap, easy to use, and come in many shapes and sizes. Freeze that, then add your sweetened peanut butter.