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 Orzo-And-Portobello Casserole?

You need 17 ingredients. The key ingredients include: 1/4 cup chopped sun-dried tomatoes, packed without oil, 1/4 cup boiling water, 1 tablespoon olive oil, 2 cups sliced leek, and more.

Is Orzo-And-Portobello Casserole suitable as pasta & noodles?

Yes, Orzo-And-Portobello Casserole falls under the Pasta & Noodles category and is a great choice for this type of meal.

How do I store leftover Orzo-And-Portobello Casserole?

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

Orzo-And-Portobello Casserole Recipe

Name: Orzo-And-Portobello Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1/4 cup chopped sun-dried tomatoes, packed without oil; 1/4 cup boiling water; 1 tablespoon olive oil; 2 cups sliced leek; 2 cups diced portobello mushroom caps; 1 cup mushrooms, quartered; 2 garlic cloves, minced; 4 cups cooked orzo (about 2 cups uncooked rice-shaped pasta); 2 cups thinly sliced fennel bulb (about 1 large); 2 cups tomato juice; 2 tablespoons minced fresh or 2 teaspoons dried basil; 2 tablespoons balsamic vinegar; 1 teaspoon paprika; 1/8 teaspoon pepper; Cooking spray; 1 cup (4 ounces) shredded sharp provolone cheese; 1/4 cup grated fresh Parmesan cheese

Try this homemade Orzo-And-Portobello Casserole recipe the whole family will love. Made with tomatoes, boiling water, olive oil and leek. Easy step-by-s…

This Orzo-And-Portobello Casserole relies on simple, everyday ingredients such as boiling water, olive oil, sliced leek and mushrooms, quartered. It comes together quickly and makes 4 servings, at about 451 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 Pasta & Noodles

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

Feel free to swap in similar ingredients you already have on hand and adjust seasoning to taste.

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

My Personal Notes

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Orzo-And-Portobello Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

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