If you have a giant slab of butter, then it’s better to take a knife and cut it into smaller sticks with a ½ cup serving. This will make it easier to freeze it as the butter will take up less space and it will also thaw quickly.

Carefully wrap each butter stick in a piece of aluminum foil and make sure each stick is fully covered. This will keep the odor of the other foods in your freezer away from your butter.

Put the aluminum foil-covered butter sticks in high-quality freezer bags and seal the bags shut. This double layering protects the butter sticks from freezer burn and also keeps your butter free of the odors of the other food items in your freezer.  

Label the freezer bags with the date when you bought the butter and the date when you froze it. Make sure that the bags are airtight and put them in your freezer.