Heat a heavy-bottomed pan
Add the condensed milk, sugar, and cardamom powder, and cook until the sugar is completely dissolved,stirring constantly
When the condensed milk starts coming off the sides off the pan
After 15 minutes,remove and spread the peda evenly on a plate to a 1/4-inch thickness, garnish with chopped nuts and let cool
Cut the peda into 1-inch squares and serve at room temperature
