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 Spaghetti With Caramelized Onion And Radicchio?

You need 12 ingredients. The key ingredients include: 1 1/2 teaspoons olive oil, 3 cups thinly sliced yellow onion (about 1 large), 1/4 teaspoon crushed red pepper, 3 garlic cloves, minced, and more.

Is Spaghetti With Caramelized Onion And Radicchio suitable as pasta & noodles?

Yes, Spaghetti With Caramelized Onion And Radicchio falls under the Pasta & Noodles category and is a great choice for this type of meal.

How do I store leftover Spaghetti With Caramelized Onion And Radicchio?

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

Spaghetti With Caramelized Onion And Radicchio

Name: Spaghetti With Caramelized Onion And Radicchio
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 1/2 teaspoons olive oil; 3 cups thinly sliced yellow onion (about 1 large); 1/4 teaspoon crushed red pepper; 3 garlic cloves, minced; 1/4 cup dry white wine; 1/2 pound uncooked spaghetti; 1 3/4 cups thinly sliced radicchio (about 1/2 head); 1 tablespoon chopped fresh flat-leaf parsley; 1 teaspoon chopped fresh oregano; 1/2 teaspoon salt; 1/4 teaspoon freshly ground black pepper; 6 tablespoons (1 1/2 ounces) crumbled Parmigiano-Reggiano cheese

Try this homemade Spaghetti With Caramelized Onion And Radicchio recipe the whole family will love. Made with olive oil, yellow onion, red pepper and ga…

This Spaghetti With Caramelized Onion And Radicchio relies on simple, everyday ingredients such as olive oil, crushed red pepper, garlic cloves, minced and dry white wine. It comes together quickly and makes 4 servings, at about 296 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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Spaghetti With Caramelized Onion And Radicchio

Tips for the best results

Variations & substitutions

My Personal Notes

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