Here are your ingredients:
4 veggie burgers, I like the Boca vegan but any kind will do.
1 onion sliced
1 small can mushrooms, drained (I really like mushrooms so I use the big can)
1 cup vegetable broth
1 teaspoon Kitchen Bouquet or Gravy Master (whatever you use to add color to your gravy)
1 Tablespoon cornstarch
This is the gravy, you add the Gravy Master or Kitchen Bouquet and cornstarch to the vegetable broth and whisk until smooth. Pour sauce over burgers, turn heat to medium. Gravy will thicken in a few minutes and the dish is done.