Sieve the milk powder followed by cocoa powder over a wide tray and keep them aside.
Method
Take sugar in a pan and heat it up. Add 1/2 cup of water and let the sugar dissolve in medium flame. Keep stirring the mixture, as it boils for few minutes check the consistency.
When the sugar syrup reaches single string consistency, add butter to it. In couple of minutes the butter gets integrated with sugar syrup. Mix well and switch off the heat.
Next add cocoa powder plus milk powder mixture (few tbsp at a time) to the sugar syrup. Mix well till glossy. Repeat this process till you finish all the mixture of milk powder and cocoa powder.
Now the chocolate mixture is ready which is glossy and thick. Transfer it over a ghee greased tray and level it with flat spatula. Keep it in the freezer for about 15 minutes. After the freezing time cut the desired shape using cookie cutter.
Very delcious home made chocolate is ready to enjoy.
Notes
Sieving milk powder along with cocoa powder ensures the powder is lump free. Do not skip this step.
When you check a drop of sugar syrup between your fingers, it should form a single string. That is single string consistency. If it's not, continue cooking for few more minutes.
You need to switch off the stove before adding milk powder plus cocoa powder. If you continue cooking the chocolate will be very hard.
Do not add all the milk powder and cocoa powder at once, instead do it in steps. Few tbsp at a time. This helps the powder to combine evenly.
You can cut the chocolates in desired shape and even sprinkle some nut powder too.