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 Roasted Asparagus With Onions?

You need 10 ingredients. The key ingredients include: 1 lb fresh asparagus spear, trimmed, 1 large purple onion, thinly sliced, vegetable oil cooking spray, 2 tablespoons balsamic vinegar, and more.

Is Roasted Asparagus With Onions suitable as vegetarian?

Yes, Roasted Asparagus With Onions falls under the Vegetarian category and is a great choice for this type of meal.

How do I store leftover Roasted Asparagus With Onions?

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

Roasted Asparagus With Onions Recipe

Name: Roasted Asparagus With Onions
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 lb fresh asparagus spear, trimmed; 1 large purple onion, thinly sliced; vegetable oil cooking spray; 2 tablespoons balsamic vinegar; 1 1/2 teaspoons orange rind, grated; 2 tablespoons fresh orange juice; 1 teaspoon dark sesame oil; 1/2 teaspoon salt; 1/2 teaspoon pepper; 1/4 teaspoon sugar

Try this homemade Roasted Asparagus With Onions recipe the whole family will love. Made with fresh asparagus spear, purple onion, vegetable oil cooking …

This Roasted Asparagus With Onions relies on simple, everyday ingredients such as vegetable oil cooking spray, balsamic vinegar, orange rind, grated and fresh orange juice. It comes together quickly and makes 4 servings, at about 51 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 Vegetarian

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

Brown sugar instead of white sugar adds a deeper, more caramel-like flavor.

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

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Roasted Asparagus With Onions

Tips for the best results

Variations & substitutions

My Personal Notes

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