Cream the butter and sugar together
Add the apple sauce
Mix in the dry ingredients(flour, corn starch, baking powder, salt and spices) along with the vanilla extract. Use your hands to make a round ball.
Preheat your oven to 320°F.
Roll out the cookie dough between two sheets of parchment paper until 1/2 a centimetre thick.
By now, the tamarind jam should have been reduced to a maple syrup-like texture. Mix 1 teaspoon of cornstarch in 2 tablespoons of water and pour into the tamarind mix. Allow the jam to simmer at medium-low heat for a few minutes (3-5 minutes) to thicken some more to almost a thick syrup/sauce-like texture. Take it off the stove to cool and further solidify. I usually stick the pot in the fridge to make it cool faster.
Cut out the cookies using your favourite cookie cutter shape. Cut out the cookie's centre for the tops of the sandwiches.
Bake the cookies at 320°F for 12 minutes.
Allow your baked cookies to fully cool down.