This roasted asparagus and pearl onions with creamy Boursin sauce is the kind of side dish that feels elegant but couldn’t be easier. Roasting brings out the natural sweetness of the pearl onions and gives the asparagus slightly crisp edges, while a silky garlic herb cream sauce ties everything together.
It’s simple, elevated, and perfect for weeknights or holiday dinners.
Why You’ll Love This Recipe
- Deep, caramelized flavor from roasting
- Creamy, garlicky sauce made in minutes
- Ready in about 25 minutes
- Beautiful presentation for entertaining
Ingredients
- 1 lb fresh asparagus, trimmed
- 1 cup pearl onions, peeled (fresh or frozen, thawed)
- 2 tablespoons olive oil
- Salt, to taste
- Freshly ground black pepper
- ½ cup heavy cream
- 1 (5.2 oz) wheel Boursin cheese (Garlic & Fine Herbs recommended)
- Optional garnish: lemon zest, chopped chives, or fresh parsley
How to Make Roasted Asparagus and Pearl Onions
1. Prep the Oven
Preheat oven to 425°F. Line a large baking sheet with parchment paper for easy cleanup.
2. Roast the Vegetables
Place asparagus and pearl onions on the baking sheet. Drizzle with olive oil and season generously with salt and pepper. Toss to coat evenly and spread into a single layer.
Roast for 18–22 minutes, until the asparagus is tender with lightly crisp tips and the onions are golden and caramelized.
3. Make the Creamy Boursin Sauce
While the vegetables roast, add heavy cream and Boursin cheese to a small saucepan over low heat. Whisk gently until melted and smooth. If the sauce becomes too thick, add a splash of milk to loosen it.
4. Assemble & Serve
Transfer the roasted vegetables to a serving platter. Spoon the warm Boursin cream sauce over the top or serve it on the side for dipping.
Garnish with lemon zest or fresh herbs if desired. Serve immediately.
Tips for Perfect Roasted Asparagus
- Don’t overcrowd the pan — vegetables should be in a single layer for proper caramelization.
- Trim woody ends of asparagus before roasting.
- For extra color, broil the last 1–2 minutes (watch closely).
Variations
- Add crispy bacon for a smoky twist.
- Sprinkle with Parmesan before serving.
- Make it lighter by using half-and-half instead of heavy cream.
- Add mushrooms to the roasting pan for extra depth.
Roasted Asparagus and Pearl Onions with Creamy Boursin Sauce
- Total Time: 27 minutes
- Yield: 4 SERVINGS 1x
Description
Tender roasted asparagus and caramelized pearl onions finished with a rich, creamy Boursin herb sauce. An easy yet elegant vegetable side dish perfect for weeknights, holidays, or spring dinners.
Ingredients
For the Vegetables
-
1 pound asparagus, trimmed
-
1 cup pearl onions, peeled
-
2 tablespoons olive oil
-
Salt, to taste
-
Black pepper, to taste
For the Creamy Boursin Sauce
-
½ cup heavy cream
-
1 (5.2 oz) wheel Boursin cheese (Garlic & Fine Herbs)
-
Optional: lemon zest or chopped fresh chives for garnish
Instructions
-
Roast the Vegetables
Preheat oven to 425°F. Place asparagus and pearl onions on a large baking sheet. Drizzle with olive oil and season with salt and pepper. Toss to coat and spread into an even layer. -
Bake
Roast for 18–22 minutes, turning once, until asparagus is tender with lightly crisp tips and onions are golden and caramelized. -
Make the Sauce
While the vegetables roast, add the heavy cream and Boursin cheese to a small saucepan over low heat. Whisk gently until the cheese is melted and the sauce is smooth and creamy. -
Assemble
Transfer roasted asparagus and pearl onions to a serving platter. Spoon the warm Boursin cream sauce over the top or serve on the side. -
Serve
Garnish with lemon zest or fresh chives if desired. Serve immediately.
Notes
-
Do not overcrowd the baking sheet or the vegetables will steam instead of roast.
-
If the sauce thickens too much, whisk in a splash of milk or cream to loosen.
-
For extra color, broil the vegetables for the last 1–2 minutes.
- Prep Time: 5 MINUTES
- Cook Time: 22 MINUTES
- Category: Side Dish
- Method: Roasting
- Cuisine: American
What to Serve It With
This roasted asparagus side dish pairs beautifully with:
Storage
Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently in the oven or microwave until warmed through.
Rich, creamy, and perfectly roasted, this asparagus and pearl onion dish proves that simple ingredients can create something truly special.
