Ingredients:
- 1 Grillers Prime® Veggie Burgers
- 1 slice Gruyere cheese or Swiss cheese
- 1/2 teaspoon vegetable oil
- 1/2 cup sliced fresh mushrooms
- 1 thin-sliced red onion, separated into rings
- 1 lettuce leaf
- 1 thin-sliced tomato
- 1 whole grain hamburger bun, split and toasted
