4squareschocolatesquares or small rectangle shaped candies work great
Instructions
Place the bread slices in a microwave safe plate.
Arrange the chocolate candies on top of the first bread slice
Microwave for about 45 seconds.
Give it few seconds outside the oven and you can see that the candies will literally start melting more on its own from residual heat.
Using a spoon or butter knife, spread the slightly melted candies on top of the bread slice evenly (if needed, you may place the plate back in the microwave and heat for another 20 more seconds in case the candies are not melted completely).
Once it's done, place the second bread slice on top and flip the sandwich (i like to do this before placing the sandwich back in the oven so the bread slices are evenly heated on both sides).
Place the sandwich back in microwave oven and heat for another 20 seconds, slice and serve!