Grilled Veggie-Portobello Mushroom Burgers


Portobello mushrooms, winter squash, and eggplant are marinated, then grilled and topped with blue cheese in what's become a favorite at my house.

Prep Time:
20 mins
Cook Time:
6 mins
Additional Time:
2 hrs
Total Time:
2 hrs 26 mins
6 servings


  • 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


  1. Place the mushrooms, eggplant, winter squash, and zucchini into a shallow bowl or baking dish. Drizzle with the balsamic vinaigrette, turning to coat evenly. Cover, and refrigerate at least 2 hours, or up to 24 hours, stirring occasionally.

  2. Preheat grill to medium-high heat.

  3. Drain vegetables and discard marinade. Place vegetables on preheated grill, and cook until lightly browned, turning once, or about 3 minutes on each side. (Note that cooking times vary between grills.) Sprinkle the mushrooms with blue cheese, and let the cheese melt slightly.

  4. Open the 6 hamburger buns and divide the eggplant, squash, and zucchini among bottom halves. Place the portobello mushrooms on top of the vegetables, cheese side up. Top with the remaining 6 hamburger bun halves. If necessary, use toothpicks to hold the buns in place. Serve immediately.

Editor's Note

The nutrition data for this recipe includes information for the full amount of the balsamic vinaigrette marinade. Depending on the marinating time, ingredients, cooking method, etc., the actual amount of the marinade consumed will vary.

Nutrition Facts (per serving)

491 Calories
32g Fat
43g Carbs
12g Protein
Nutrition Facts
Servings Per Recipe 6
Calories 491
% Daily Value *
Total Fat 32g 41%
Saturated Fat 7g 34%
Cholesterol 14mg 5%
Sodium 1448mg 63%
Total Carbohydrate 43g 16%
Dietary Fiber 7g 25%
Total Sugars 7g
Protein 12g
Vitamin C 9mg 43%
Calcium 187mg 14%
Iron 3mg 14%
Potassium 993mg 21%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.