1. Preheat oven to 160ºC and line a large baking tray with greaseproof paper.
2. Add the flour, sugar, baking powder, baking soda, and salt to a microwave-safe mixing bowl and mix. Break the marzipan into small pieces, add to the bowl and toss until coated. Toss a few times as you’re mixing the marzipan in, it looks like a huge amount as you’re adding it until you shake it.
3. Make a well in the centre and add the wet ingredients.
4. Place the uncovered bowl in the microwave for one minute. Gently mix the ingredients. Return to the microwave for another minute and stir again - the marzipan should have softened into the dough and be relatively smooth when you stir.
5. Stir in your chocolate chips, as the dough is warm, they’ll start to melt instantly, creating the marble look as you stir.
6. Use a large cookie scoop to portion out cookie dough onto the tray. You should get roughly 8 scoops and space them apart on the tray with room to spread.
7. Roll the portioned amounts between your hands into a rough ball and flatten with your hands. The dough may feel slightly drier than regular cookie dough, but the texture of the marzipan as it cooks makes your centres gooey.
8. Place the tray in the centre of the oven and bake for 7-8 minutes. Open the oven to let a tiny bit of air out and return to the oven for a further 7-8 minutes.
9. Remove from the oven and allow to cool on the tray for ten minutes before serving or gently moving to wire racks to cool completely.

Serve and enjoy!