Mushrooms are a source of glutamate, a naturally occurring compound that gives the fungi their umami flavor. But to really give these “patties” a savory boost, we brush them with vegetarian steak sauce. Add a simple side salad or some grilled veggies for a satisfying and easy dinner on the grill.
Vegetarian All-American Portobello Burgers
Serves 4
Active Time: 20 minutes
Total Time: 20 minutes
4 portobello mushroom caps, gills removed if desired
Cooking spray
1/4 teaspoon ground pepper
2 tablespoons mayonnaise
1 tablespoon ketchup
1 tablespoon sweet pickle relish
4 teaspoons steak sauce, vegetarian style
4 slices American cheese
4 whole-wheat buns, toasted if desired
1 cup shredded iceberg lettuce
4 large tomato slices…