Preheat your oven to 320°F (160°C). Line a large baking sheet with parchment paper.
Put 4.5 oz Butter and 0.5 cup Coconut sugar into a large mixing bowl.
Add 1 Egg and 1 teaspoon Vanilla extract and mix well until smooth.
Add 1.5 cup Rolled oats, 2 tablespoon Flax seeds, 1 cup All-purpose flour, 0.5 teaspoon Baking powder and 1.75 oz Dark chocolate.
Mix well to bring everything together into a dough.
Divide into twelve equal balls of about 2 oz (55g) each. Put onto a lined baking sheet. Flatten them out slightly.
Put into the oven and bake for 12-15 minutes.
Once cooked, cool on the tray for 5 minutes then transfer to a wire rack and cool for a further 10 minutes.
Notes
Roll the cookie balls into even sizes to ensure that they cook at the same rate in the oven.
The cookies need a little help to spread out, so don't skip the step of flattening them a little.
The cookies will still seem a bit soft when they come out of the oven. That is the way they should be, as they will harden as they cool.
Make sure you leave the cookies to cool on the baking tray for 3-4 minutes before transferring them to a cooling rack, otherwise they will fall apart if you move them straight from the oven.