Grilled Veggie-Portobello Mushroom Burgers

By PaulaM

4.18 / 5

20min

6min

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6 large portobello mushroom stems removed
1 eggplant sliced into 1/2 inch rounds
1 medium yellow squash cut into 1/4-inch slices
1 zucchini cut into 1/4-inch slices
1 (16 fl oz) bottle balsamic vinaigrette
1 (4 ounce) package crumbled blue cheese
6 hamburger buns split and lightly toasted