Step 1

To a medium saucepan, melt the butter over medium heat. Add in the onions and cook and stir until tender.

Step 2

Add in the beef broth and simmer for 5 minutes, stirring occasionally.

Step 3

Make a slurry by adding the water and cornstarch to a small bowl and mixing together with a fork.

Step 4

Pour the slurry into the saucepan and cook for 1 minute or until thickened.

Step 5

Pour into a gravy boat & serve!