1/2 cup packed brown sugar
2 TBSP butter, softened
1/8 teaspoon vanilla
1 1/2 TBSP milk
1/3 cup flour
Pinch of salt
Chocolate chips (or whatever add-in you like)
Combine softened butter and brown sugar with a mixer on low for a little less than a minute.
Gently stir in vanilla, milk, flour and salt with a spoon.
Then combine the mixture with the mixer on low for about 30 seconds.
Add chocolate chips and stir with a spoon.
Chill in fridge for about 30 minutes.