Things You'll Need:
- 1/2 cup olive oil
- 6 portobello mushrooms
- 1/4 cup balsamic vinegar
- 1 tsp. pepper
- 2 tsp. salt
- 2 cloves garlic
- 1/3 cup marjoram, chopped
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Step 1
Combine olive oil, vinegar, salt, garlic, marjoram and mushrooms in a bowl. Let the mushrooms marinate in the dressing for 2 hours.
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Step 2
Preheat your oven to 425 degrees.
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Step 3
Cover a baking sheet with tinfoil sprayed with nonstick spray. This will help protect your pan.
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Step 4
Arrange portobello mushrooms on the foil. Place the pan in the oven and roast for 20 minutes.
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Step 5
Remove your roasted portobello mushrooms from the oven and serve hot. Use the dressing that you made to spoon over the mushrooms when served on the dish.











