Dry roast oats, poha, almonds and peanuts, each separately. While dry roasting, keep the flame in medium and keep stirring frequently to avoid burning of the ingredients. Let the ingredients cool completely.
Take poha, oats and cardamom together in a mixer or your food processor and grind it to a fine powder. Keep aside until use.
Now take roasted peanuts and almonds into the mixer or food processor and pulse it to get a fine powder. Pulse it, we first want to powder it and then mix together.
Once the nuts are powdered, Now add the powdered oats and poha mixture to it and also the powdered jaggery and grind again for a minute or two.
While grinding, the nuts will start releasing its fat and the mixture will start clumping together.
Transfer the contents to a flat plate, and start making balls/ladoo by taking a handful of mixture and pressing it tight in your palms.
Store them in an air-tight container on the Kitchen counter for 2-3 days, if storing for more, i would advise to refrigerate it.