Preheat the oven to 180℃/360℉. Use oil to grease 12 holes of a muffin tin.
In a large bowl, or the bowl of a stand mixer, combine the butter, brown sugar and granulated sugar (medium speed) for about 3-5 minutes until fully combined.
Add the egg and almond extract and mix again.
Fold in the flour, baking soda and fold together. Use an ice cream scoop or your hands to form 12 balls of dough, placing each ball into a hole in the muffin tin. Use a tablespoon measure, egg cup or similar to create indents in each cup. Press down as much as you can while still leaving a layer of cookie at the bottom.