01 -
In a mixing bowl, beat the sugar and softened butter until the mixture gets fluffy and pale.
02 -
Divide the dough into two halves. Keep one plain and blend cocoa powder into the other half.
03 -
Drop small portions of chocolate and vanilla dough alternately into a baking pan. Use a skewer or toothpick to swirl them into zebra-like patterns.
04 -
Let the dough chill in the fridge for about 30 minutes so it doesn't spread too much while baking.
05 -
Set your oven to 350°F (175°C). Bake the cookies for 10 to 12 minutes. Let them cool on the baking pan for 5 minutes before moving them to a cooling rack.