How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Portabello Burger?

You need 10 ingredients. The key ingredients include: 1/2 cup olive oil (approx.), 3 dashes balsamic vinegar (approx.), 1 handful rosemary, thyme, basil, or sage (depending on what we happen to have on hand), 2-3 cloves minced, and more.

Is Portabello Burger suitable as general?

Yes, Portabello Burger falls under the General category and is a great choice for this type of meal.

How do I store leftover Portabello Burger?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Portabello Burger Recipe

Name: Portabello Burger
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1/2 cup olive oil (approx.); 3 dashes balsamic vinegar (approx.); 1 handful rosemary, thyme, basil, or sage (depending on what we happen to have on hand); 2-3 cloves minced; 1 pinch salt and pepper; 2 portabello mushrooms; 1 onion, diced; 1 pat butter; 1 handful sundried tomatoes, cut into smallish pieces(optional); 2 good sandwich bread (we like par-baked sandwich rolls from Trader Joe's or Fresh Direct)

Try this homemade Portabello Burger recipe the whole family will love. Made with olive oil, balsamic vinegar, handful rosemary and salt. Easy step-by-st…

This Portabello Burger relies on simple, everyday ingredients such as olive oil (approx.), minced, salt and pepper and portabello mushrooms. It comes together quickly and makes 4 servings, at about 524 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 General

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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Portabello Burger

Tips for the best results

Variations & substitutions

My Personal Notes

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