in a pan add sugar corn flour and 1/4 Cup ghee
add milk and mix well
cook over low medium heat until mixture starts thickening and gets paste like consistency
add cardamom powder and mix well
add 2 teaspoon ghee and mix well
divide the mixture into parts, you can make halwa with no food colouring or different food colours as desired
in the first Pan add no colour cook until the mixture is glossy and completely leaves the sides of the pan
in second pan, add the desired food colouring and mix well
Cook until mixture leaves the sides of the pan completely
Pour the mixture over the greased butter paper
both the mixture should be on a different Greased butter paper
place another Greased butter paper on top of both halwa. Tap with hands
Peel off the butter paper
Add nuts on top of halwa
Place the same greased butter paper again on top and press gently so that nuts are embedded in halwa
Peel off the butter paper and allow to set for 2-3 hours
Repeat the same process with second Halwa and allow to set for 2-3 hours
Trim edges of the halwa. Cut into squares with the paper
Refrigerate upto 1 week. Serve as desired