Into a large mixing bowl, add Milk Chocolate (185 gram) and Dark Chocolate (185 gram). Pour over Sweetened Condensed Milk (395 gram). Heat in the Panasonic Microwave Oven for 1-2 minutes, and stir well.
Add Tim Tam (200 gram) and Nestle® Milo (1/2 cup). Mix well.
Transfer batter into a square cake tin lined with foil. Smooth out the surface. Place in refrigerator for 3 hours to set.
Slice, serve, and enjoy! Cooking results may vary depending on microwave oven used.