Measure 3½ cups of chocolate chips into microwavable bowl. Microwave in 30 second increments, stirring each time until just melted and smooth. **If desired, add ¼ tsp extract at this time...Mint, almond, peppermint, etc.
Add in the whipped topping. Use beaters to mix until smooth.
Pour into an 8x8 inch pan lined with cling wrap. Cover with wax paper, pressing gently on top of chocolate.
Place in freezer for 30 minutes.
Remove from freezer and lift out of pan using the cling wrap. On cutting board cut into pieces. If you wish to make into balls, powder hands with baking chocolate and form the pieces into balls.
Cover with wax paper and freeze for another 30 minutes.
Place remaining 2½ cups chocolate chips into microwavable bowl. Add in shortening and zap in 30 second increments until melted, stirring as you go.
Lay out wax paper or parchment. Using forks, dip frozen chocolates into melted chocolate. Decorate with sprinkles as desired.
Store in refrigerator.