Chewy white chocolate cookies

My boyfriend is a huge lover of Ben's Cookies and asked me if I could make some for him before I went on holiday to Thailand. I had used this recipe before when I was back in the UK so I thought I would re-create them here in Dubai.

Ingredients

250 g plain flour

1/2 teaspoon bicarbonate of soda

1/2 teaspoon salt

170g unsalted butter, melted

200g dark brown soft sugar

100g caster sugar

1 tablespoon vanilla extract

1 egg

1 egg yolk

325g chocolate chips

Method

1. I preheated the oven to 170 C (gas 3) and lined a baking tray with baking paper.
2  I sifted the flour, bicarb and salt all together and put to one side.
3. I creamed together the melted butter, brown sugar and caster sugar for about 5 minutes so it goes velvety and a pale brown colour - the longer you do this, the more caramelly flavour you'll get when the cookies are ready.
4. Next, I added in the vanilla, egg and egg yolk and mixed as light and creamy as possible.
5. Then, I mixed in the sifted ingredients until just blended - no need to fold and you arn't looking to put air in the dough. I just used an electric hand mixer. The dough will be very sticky by now, but don't worry... It's meant to be like that!
6. I stirred in the chocolate chips by hand so they wouldnt end up in one place.
7. I got a table spoon of dough and dropped onto the prepared baking tray. I can get 6 on my baking tray and I have to do in batches because I don't have enough trays! Drop with about 5cm space between each one and the dough spreads out when it's heated.
8. Bake for 15 to 17 minutes. I took these out when they were still soft in the middle as the cookie hardens a lot when cooled. I left them to cool for a few minutes before moving because they will break.