Costco Normandy Vegetables Recipe: Buttery Herb-Infused Medley

This buttery herb-infused medley brings restaurant-quality flavor to your kitchen table. The Costco-inspired dish combines tender vegetables with a rich, aromatic sauce.

With a simple cooking process, you can recreate this savory side dish at home. The blend of herbs and butter creates a perfectly balanced taste that complements any main course.

Ingredients for Costco Normandy Vegetables

Buttery herbs and tender vegetables create this restaurant-worthy side with minimal effort at home.

The baby carrots and pearl onions are the stars—Costco sells both in convenient bulk bags (the good stuff, not the sad wilted ones). For potatoes, small red or Yukon Gold hold their shape better than russets. Fresh thyme and rosemary make the biggest difference here; dried won’t give you that bright, aromatic punch. Grab them from the produce section with stems still attached if possible.

No pearl onions? Shallots or small yellow onions quartered work in a pinch. Skip the wine if needed—extra vegetable stock with a splash of lemon juice mimics the acidity. Heavy cream can be half-and-half (less rich but still creamy) or whole milk (thinner but doable). For a dairy-free twist, coconut cream works surprisingly well in this dish.

Leftovers keep 4-5 days in the fridge—reheat gently to avoid curdling the cream. Freezes for 2 months (the herbs lose a bit of brightness but the flavor holds). Best made fresh, but still solid for meal prep. Always bring butter to room temp before cubing (worth the extra minute).

Step-by-Step Instructions for Buttery Herb-Infused Normandy Vegetables

This method ensures every vegetable absorbs the rich, aromatic flavors perfectly.

Step 1: Prepare and Par-Cook the Vegetables

Begin by placing the 1 lb Baby Carrots (peeled and halved lengthwise) and 1.5 lb Small Red Potatoes (quarterd, skin-on) in a large pot of salted boiling water for 5 minutes. This head start ensures they’ll finish cooking evenly in the oven.

After 5 minutes, add the 12 oz Pearl Onions (peeled) and cook for an additional 3 minutes until all vegetables are just tender but still hold their shape. Drain immediately and transfer to a large baking dish—this stops the cooking process and prevents them from turning mushy.

Step 2: Infuse the Butter with Herbs and Garlic

In a small saucepan, melt the 0.75 cup Unsalted Butter (cut into small cubes) over medium-low heat. Once melted, add the leaves from the 6 whole Fresh Thyme Sprigs and the chopped leaves from the 2 whole Fresh Rosemary Sprigs.

Let the butter simmer gently for 2-3 minutes until fragrant. Stir in the 4 cloves Garlic Cloves (minced or pressed) and cook for 30 seconds just until the garlic is aromatic but not browned. Remove from heat and set aside to steep—this infuses the butter with deep herbal notes.

Step 3: Create the Normandy Sauce

In the same saucepan, pour in the 0.5 cup Dry White Wine and bring to a simmer over medium heat. Let it reduce by half, about 3-4 minutes, to burn off the alcohol and concentrate the flavor.

Add the 1 cup Vegetable Stock, 0.5 cup Heavy Cream, 1 tbsp Dijon Mustard, 1 tsp Kosher Salt, and 0.5 tsp Freshly Ground Black Pepper. Whisk until smooth and simmer for 5 minutes until slightly thickened. Pour this sauce over the par-cooked vegetables in the baking dish.

Step 4: Roast to Perfection

Drizzle the herb-infused butter evenly over the vegetables and sauce. Gently toss to coat everything in the rich, aromatic mixture, ensuring all pieces are well-glazed.

Roast in a preheated 400°F oven for 25-30 minutes, basting halfway through, until the vegetables are golden and caramelized and the sauce has thickened into a glossy glaze. The edges of the potatoes should be tender when pierced with a fork, and the carrots should have a slight caramelized crust.

Regional Styles of These Flavors

French Normandy Tradition

The classic French version uses local apples and cider alongside root vegetables, creating a sweet-tart balance. I add ½ cup apple cider to the sauce for authenticity, and 1 diced Granny Smith apple during the last 10 minutes of roasting. This mirrors the regional orchard abundance. 🗺️

British Sunday Roast

Across the Channel, this becomes a heartier side with parsnips and turnips added to the mix. I swap ½ lb parsnips for an equal amount of carrots and include 1 sliced leek for an oniony depth that pairs perfectly with roast beef.

American Thanksgiving

For holiday tables, I incorporate butternut squash cubes and Brussels sprouts. The squash adds natural sweetness while the sprouts contribute a pleasant bitterness. Roast at 375°F for 35 minutes to accommodate the denser vegetables.

Mediterranean Twist

I give it a southern European flair with zucchini and eggplant in place of potatoes. The key is salting and draining the eggplant first to prevent a watery sauce. Add ½ tsp smoked paprika to the butter for a subtle Spanish influence.

German Influence

In regions near the French border, they often add sauerkraut and caraway seeds. I rinse 1 cup sauerkraut well and add it during the last 15 minutes of roasting. The tangy crunch contrasts beautifully with the creamy sauce.

Frequently Asked Questions