Pre-heat your oven to 180C Fan/400F/Gas Mark 6, and line a few baking trays (or however many you own) with baking paper
Set aside 14 pieces of the chocolate oranges, then chop up the rest into chocolate chip sized chunks
Ideally using a stand mixer with the paddle attachment, mix the butter, caster sugar and light brown soft sugar together until fluffy and paler in colour. This will take 3-5 minutes in an electric mixer (I use speed 3)
Add the egg and orange extract, and mix them in
Add the plain flour, cocoa powder, baking powder, bicarbonate of soda and salt and mix them in until just combined
Add the chopped up Terry's Chocolate Orange pieces, mix briefly, just to evenly distribute them
Divide the dough into portions, I weighed the dough out to make each cookie an equal size. For 14 cookies I used 60g dough per cookies. If you'd like bigger cookies, you can make 12 cookies with 70g dough per cookie
Roll balls of the cookie dough between your hand, flatten them a little and place onto your lined baking trays, leave space between the cookies (at least 2") as they will spread
Bake the cookies for 12 minutes, remove from the oven and place a segment of Terry's chocolate orange on top of each one, then leave to cool on the trays for at least 10 minutes before moving to a cooling rack
Store leftovers in an airtight container and eat within 3 days
Video
Notes
Make sure all your ingredients (particularly the butter and egg) are at room temperature before you start baking.
I used unsalted butter for this recipe, a baking spread will work but butter is nicer!
I recommend using light brown soft sugar for delicious flavour and a more gooey cookie, but you can replace it with caster sugar if you can't get hold of brown sugar.
If you can't get hold of orange extract*, you can use the zest of one orange instead.
You will need 2 whole Terry's chocolate oranges* for this recipe. I used one milk and one dark, but you can use any combination of milk, white or dark.
You can swap the chopped chocolate orange in the cookie dough for chocolate chips if you prefer.
Although I provide cup measurements, I highly recommend weighing your ingredients out using digital kitchen scales*. It is the most accurate way to measure ingredients and will ensure the best results. Digital scales are very low cost and can be purchased for around £12 ($16.50) .
For teaspoon (tsp) and tablespoon (tbsp) measurements, please use measuring spoons* and not the type of spoons you eat with. Again this will ensure accuracy and provide the best results.