When you buy these here in Thailand, they're perfectly even, green and factory made. I can't make those perfect biscuits, so I thought it would be fun to swirl them instead. I made some green cookie dough, and some natural pandan color, then spooned half of each into a piping bag and piped out swirls of green and cream biscuits ready for baking.
If you're using pandan leaves for your flavoring, blend 2-3 of them in just enough water liquidize them. Natural pandan only adds a slight (not strong) green color to the cookie, so its easier to get the contrast between green and cream side. If you're using pandan essence, it has food color already added and so it's better to make a single color cookie instead, otherwise you'll have to use more of the food coloring in the green part.
350 gms Flour
1 1/2 Teaspoons Baking Powder
60 gms Coconut Milk Powder
180 gms Butter
50 gms Margarine
125 gms Caster Sugar
1-2 Tablespoon Pandan Juice
Green Food Coloring
1. Mix flour, coconut powder, and baking powder together, set aside.
2. Put the butter, margarine, egg, sugar, and pandan water (or drops of essence) into a food blender and blend for 3-5 minutes. You're really creaming the mixture and putting air into it.
3. Add the dry powder mixture, and just give it a quick mix, 10-20 seconds or so. You want a crumbly cookies, if you blend too much, it will be hard and overworked.
4. Take out half the mixture and set it aside, add a little food color to the mixture and another very short blend, just to mix the food coloring into the half you left in the mixer.
5. Next to pipe. I spooned in the cream cookie dough into the piping bag, pressed it down and spooned the green mixture in, so I have a piping bag half green and half cream for the length of it.
6. Pipe out swirls of cookie dough onto baking sheets.
7. Bake at 180 degrees celsius for 12-15 minutes. You don't want these cookies to go brown, ideally you want heat from below the cookie, but I only had a table-top fan oven, which blows heat from the top. I had to shield mine from the direct heat with a piece of tin foil.
8. Once they're cooked (flip one over and check it's baked underneath), leave them to cool on a tray, and it's nice to store them in a cookie jar together with a pandan leave to emphasize the flavor.