Burnt butter, or food of any kind, can make for a tough cleaning job. When scrubbing with soap and water doesn't do the trick, there are other options available to help the cause. There are even some solutions that are probably already in your house that to help loosen the burnt residue right off your cooking pan.
Using Cream of Tartar
Pour a quart of water into the burnt butter pan.
Add 2 tablespoons of cream of tartar to the pan and mix it into the water.
Place the pan on the stove and bring the water to a boil.
Let the pan boil for 10 minutes and then dump the water down the drain.
Clean the pan using a dish rag, soap and water. The burnt butter should now easily come off.
Using Fabric Softener
Fill the burnt butter pan with water.
Pour a little fabric softener into the pan.
Allow the pan to soak for an hour.
Clean the pan using a dish rag, soap and water. The burnt butter will now be much easier to remove.
Dissolve a few tablespoons of salt in water and pour this salt water into your burnt butter pan.
Let the pan soak overnight.
Place the pan on the stove and bring the salt water to a boil.
Discard the saltwater and clean the pan with a dish rag, soap and water. The burnt butter should come off easily.