Cream the butter and sugars

• Beat the softened butter with the brown sugar and granulated sugar until light and fluffy.
• Beat in the egg and vanilla extract until smooth.

Make the dough

• Whisk the flour, baking soda and salt together in a separate bowl.
• Fold the dry ingredients into the wet mixture until just combined.
• Stir in the chocolate chips.

Chill the dough

• Cover the dough and refrigerate to firm it up for softer, thicker cookies.

Shape the cookies

• Preheat the oven to 180 °C.
• Scoop the dough into balls and place them on a lined baking tray, spaced apart.

Bake

• Bake until the edges are set but the centres still look soft and gooey.
• Let the cookies cool on the tray for a few minutes before transferring them.