Melt the chocolate on a double boiler or in 30 second bursts in the microwave 

Using a mixer, beat the butter on medium speed until creamy. Clean the sides of the bowl with a spatula 

Slowly add the condensed milk and vanilla

Finally, pour the melted chocolate and mix until combined

Spread the chocolate mixture to cover the entire surface of your dome or semi-circle domes 

Soak 3-4 digestive biscuits in milk for 5 seconds (don't let them in the milk too long or they'll become mushy). Break the apart with your fingers and add on top of the chocolate

Cover with some more chocolate cream, repeating the cookie and chocolate layer 2 more times. Freeze the molds for 4-6 hours or until firm

Unmold the domes and unite top and bottom to create a sphere or ball. Roll with your hands to smooth them out. Freeze for 15 minutes in a sheet pan lined with parchment paper 

Place the chopped chocolate into a large bowl

Heat the cream in the microwave until hot 

Pour the cream into the chocolate and wait for 2 minutes for the hot cream to melt the chocolate

Mix with a spoon until creamy

Place a cooling rack on top of a cookie sheet (to catch any drippings). Pour ganache on top of each ball to cover the entire surface. Shake the rack to release the excess chocolate

If you'd like, add some sprinkles and freeze for 10 minutes or until set

Keep in the freezer before serving 

Enjoy!