In a double boiler, add in the cold heavy cream and malted milk powder. Whisk until incorporated. Malted milk mixes in best with cold liquids. Let it heat up and smooth out completely before adding the chocolate chips. It will take about 3 minutes.
Add in the chocolate chips and let it melt completely. This will take about 5 minutes. It will be completely smooth and creamy. Give it a stir occasionally with a spatula.
Pour the ganache in a shallow microwave-safe dish and cover with plastic wrap. Refrigerate for 1 hour or until the ganache is cold and set up. If it's too hard to scoop, microwave for 30 seconds.
Scoop out about a tablespoon of ganache.
Spray your hands with non-stick cooking spray or rub with oil. Roll the ganache between your palms.
Place the rolled ganache on a baking tray with parchment paper. Repeat with all of the ganache balls.
Place in the fridge and refrigerate for 15 - 20 minutes or set up.
Meanwhile, crush the malted milk balls in a sandwich bag with a rolling pin. Some big chunks will be perfect.
Microwave coating chocolate and shortening in a small microwave-safe bowl. Make sure the edges aren't too deep. Microwave for 30 seconds and stir. Repeat microwaving and stirring 3 additional times until the chocolate is completely smooth.
Dip the balls into the warm chocolate using a fork. Give the fork a tap to remove any excess chocolate. Place the chocolate on the parchment paper to dry. Repeat with all of the truffles.
If the chocolate gets too thick, warm the chocolate back up for 30 seconds.
Notes
To store any leftover chocolate truffles, place in an air tight container or ziploc bag in the refrigerator for up to 3 days.