In a separate bowl, whisk together the flour, baking powder, salt, one teaspoon of cardamom powder, and 1/2 cup brown sugar.
Cut the cup of butter into pieces. Add to the dry ingredients along with the beaten egg and knead into a smooth dough.
Cover the bowl with plastic cling film and place in the refrigerator for 30 minutes.
Wash and core the apples. Cut into quarters.
Slice each apple quarter thinly lengthwise.
In a large skillet, add 2 tablespoons brown sugar, 1 teaspoon cardamom powder, and water. Bring the mixture to a boil, stirring frequently.
Add the apple slices to the mixture. Gently stir to coat the apple slices. Cover the skillet, lower the heat, and steam the apples in the cardamom sugar mixture for 8-10 minutes. Remove from heat and set aside.
Melt the remaining tablespoon of butter and 2 tablespoons of brown sugar in a small skillet over medium-low heat.