1. Heat oven 375°F. Remove wrappers from chocolates.
2. Stir cookie mix, 2 tablespoons oil, water and egg in medium bowl until soft dough forms.
3. Set aside 1 cup dough. Add cocoa and remaining 1 tablespoon oil to remaining dough, blending well. Roll doughs into 1-inch balls. (Roll together a pinch of peanut butter dough and a pinch of chocolate dough for marbled cookies.) Place balls on ungreased cookie sheet.
4. Bake 8 to 10 minutes or until cookies are set. Remove from oven to wire rack. Cool 1 minute. Press chocolate into center of each cookie. Remove from cookie sheet to wire rack; cool completely. Makes about 36 cookies.