Add chicken broth to a saucepan and bring to a low boil over medium high heat.
In a small bowl add milk and cornstarch, whisking together until no longer clumpy. Pour this mixture into the chicken broth.
Add salt, onion powder and pepper into saucepan, stir and bring to a boil. Reduce heat to low and simmer for 5-10 minutes or until a thickened gravy forms.
Pour on mashed potatoes and enjoy!
Video
Notes
This makes about 2 cups of gravy. Note: This makes chicken gravy. If you want a beef gravy, use beef broth. If you want a vegetable gravy, use vegetable broth.