Grasshopper Tarts

Directions

1. 1
   Heat chocolate chips and shortening over medium heat, stirring constantly, until chocolate is melted, 3 to 4 minutes.
2. 2
   Line 12 medium (2 1/2 x 1 1/4-inch) muffin cups with paper baking cups. Swirl 1 tablespoon chocolate mixture in each cup with back of spoon to coat bottom and side.
3. 3
   Refrigerate until firm.
4. 4
   Fill in with remaining chocolate.
5. 5
   Refrigerate until firm.
6. 6
   Carefully remove paper baking cups from chocolate shells.
7. 7
   Return shells to muffin cups.