Fill the nonstick pan with 1/2 cup white vinegar. Add 2 tbsp. baking soda and 1 cup warm water. Mix the ingredients with your fingers until the baking soda dissolves.
Place the pan on the stove top over medium-high heat. Allow the solution to boil for 10 minutes.
Pour the solution into the sink drain. Wash the pan with hot and soapy water. Use a nylon scrub pad to loosen and remove the grease. You can also loosen the grease with a plastic scraper.
Repeat the process if you have difficulty removing the caked-on grease. Rinse and dry the pan after you successfully remove the grease.