Savory Portobello Mushroom Burgers

By Kerri

4.81 / 5

15min

10min

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2 tablespoons olive oil
2 tablespoons balsamic vinegar
1 tablespoon Dijon mustard
2 cloves garlic minced
½ teaspoon Worcestershire sauce
1 pinch salt and ground black pepper
4 large portobello mushrooms stems removed
4 Kaiser rolls split