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Hello, friends! Are you ready to meet your new favorite side dish? These Creamy Mustard Roasted Potatoes are the ultimate comfort food with a sophisticated twist. Imagine crispy, golden baby potatoes, fresh from the oven, smothered in a luxuriously creamy, tangy, and herbaceous mustard sauce. It’s a dish that feels indulgent yet is surprisingly simple to make. Whether you’re looking to elevate a weeknight dinner or impress guests at your next gathering, this recipe is your secret weapon. Let’s dive in and create something truly delicious together.
Why You’ll Love This Creamy Mustard Roasted Potatoes Recipe
The Perfect Harmony of Crispy and Creamy:
This recipe masterfully combines two irresistible textures. The potatoes are roasted until their skins are beautifully crisp and their insides are fluffy and tender. This creates the perfect canvas for the velvety, rich mustard cream sauce that clings to every nook and cranny. Each bite offers a delightful contrast that keeps you coming back for more.
A Sauce That Steals the Show:
Forget boring gravy! The sauce in this dish is a star in its own right. By using two types of mustard—smooth Dijon for depth and grainy for texture and pops of flavor—you create a complex, tangy, and aromatic sauce. Enriched with cream and brightened with fresh dill and lemon, it’s a flavor powerhouse that transforms simple potatoes into a gourmet experience.
Deceptively Simple Elegance:
Don’t let the impressive final dish fool you. The process is straightforward and forgiving. While the potatoes roast hands-off in the oven, you have just enough time to whip up the quick pan sauce on the stovetop. In under an hour, you’ll have a restaurant-quality side that looks and tastes like you spent all day in the kitchen.
Ingredients for Creamy Mustard Roasted Potatoes
Baby Potatoes:
Their small size and thin skin mean they roast quickly and evenly, becoming perfectly tender inside while crisping up beautifully. No peeling required!
Extra Virgin Olive Oil:
Used for roasting, it helps conduct heat, promotes browning, and adds a lovely fruity note to the potatoes.
Kosher Salt & Pepper:
The foundation of all good cooking. Seasoning at every stage—on the potatoes and in the sauce—builds layers of flavor.
Butter:
Added to the skillet with olive oil, butter provides a rich, nutty base flavor for sautéing the shallots and building the sauce.
Shallot:
Milder and sweeter than an onion, a finely diced shallot melts into the sauce, providing a subtle aromatic sweetness without overpowering the mustard.
Garlic Cloves:
Minced garlic adds its essential, pungent aroma to the sauce, creating a savory backbone that complements the mustard perfectly.
Chicken or Vegetable Broth:
This forms the liquid base of the sauce. Simmering and reducing it concentrates its flavor, which then carries the mustard and cream beautifully.
Dijon Mustard:
This smooth, sharp mustard integrates seamlessly into the sauce, providing a consistent tangy flavor and helping to emulsify the cream.
Grainy Mustard:
Also known as whole-grain or coarse mustard, this adds wonderful texture and little bursts of tangy flavor, making the sauce more interesting.
Heavy Cream:
This is what creates the luxurious, silky body of the sauce. It mellows the sharpness of the mustard and brings all the elements together in a rich, cohesive way.
Cornstarch:
Mixed with water to form a slurry, this is our thickening agent. It ensures the sauce clings gloriously to the potatoes instead of pooling at the bottom of the bowl.
Lemon Juice:
A small but crucial finishing touch. The fresh acidity of lemon juice cuts through the richness of the cream and brightens the entire dish, balancing the flavors.
Fresh Dill:
The herbal finale! Chopped fresh dill adds a light, grassy, and slightly anise-like flavor that is the classic partner to mustard and cream, making the dish taste fresh and complete.
(Note: The full list of ingredients with quantities is provided in the recipe card just below.)
Variations
For a Lighter Version:
You can swap the heavy cream for half-and-half or even whole milk mixed with a tablespoon of cream cheese for richness. The sauce will be slightly less thick but still delicious. Just be careful not to let it boil vigorously after adding.
Herb Swap or Boost:
While dill is classic, feel free to experiment with other soft herbs. Fresh tarragon would add a lovely anise note, chives would bring a gentle onion flavor, or parsley would offer a clean, fresh finish. A combination is also wonderful.
Add Some Protein for a Main Course:
Turn this side into a hearty one-pan meal! Toss chunks of pre-cooked sausage, diced ham, or shredded rotisserie chicken into the creamy sauce just before combining with the potatoes. You can also add a can of drained white beans for a vegetarian protein boost.
How to Prepare Creamy Mustard Roasted Potatoes
Step 1:
Start by preheating your oven to 400°F (200°C). This high heat is key for getting those potatoes crispy. While it heats, wash your baby potatoes and pat them dry. Transfer them to a large baking sheet.
Step 2:
Drizzle the potatoes generously with olive oil. Season well with kosher salt and freshly ground black pepper. Use your hands to toss everything together, ensuring each potato is evenly coated. Spread them out in a single layer, giving them a little space so they roast instead of steam.
Step 3:
Roast the potatoes for 35 to 40 minutes. You’ll know they’re done when you can easily pierce them with a fork and they have gorgeous golden-brown spots. Give them a shake or a stir halfway through for even browning.
Step 4:
While the potatoes roast, make the sauce. Place a medium skillet or saucepan over medium heat. Add the butter and a tablespoon of olive oil. Once the butter has melted, add the finely diced shallot. Sauté for 3-4 minutes until it’s soft and translucent.
Step 5:
Add the minced garlic to the skillet and sauté for just about one minute more. You want it fragrant but not browned, as burnt garlic can taste bitter.
Step 6:
Carefully pour in the chicken or vegetable broth. Bring the mixture to a lively simmer and let it cook for a few minutes. You want it to reduce by about one-third, which will concentrate its flavor.
Step 7:
Whisk in both the Dijon and grainy mustards, along with ½ teaspoon of kosher salt and ¼ teaspoon of pepper. Let this simmer together for another minute or two so the flavors can meld.
Step 8:
Pour in the heavy cream and bring the sauce back to a gentle simmer. In a small separate cup, mix the cornstarch with the 2 teaspoons of water until completely smooth to create a slurry.
Step 9:
While whisking the simmering sauce, slowly drizzle in the cornstarch slurry. Continue to cook, whisking constantly, for about a minute until the sauce comes to a boil and thickens nicely to a coat-the-back-of-a-spoon consistency.
Step 10:
Remove the sauce from the heat. Stir in the fresh lemon juice. Give it a taste and adjust the seasoning with more salt or pepper if needed.
Step 11:
To serve, create layers of flavor. Place a portion of the hot roasted potatoes in your serving bowl. Spoon a generous amount of the creamy mustard sauce over them, then sprinkle with some of the chopped fresh dill. Repeat with another layer of potatoes, sauce, and dill. Serve immediately and enjoy the applause!
Tips and Tricks
Dry Potatoes for Maximum Crisp:
After washing the potatoes, take an extra minute to pat them very dry with a clean kitchen towel or paper towels. Removing surface moisture is the secret to getting that perfectly crispy skin in the oven.
Don’t Crowd the Pan:
If your baking sheet looks a bit full, use two! Overcrowding causes the potatoes to steam rather than roast, preventing that desirable crispy exterior. Giving them space is non-negotiable for the best texture.
Make a Cornstarch Slurry:
Always mix cornstarch with a cold liquid (like water) before adding it to a hot sauce. Adding powdered cornstarch directly to the hot liquid will cause it to clump instantly. A smooth slurry ensures lump-free thickening.
How to Serve
Alongside a Simple Roast:
These potatoes are the ideal companion for a classic Sunday roast chicken, pork tenderloin, or a juicy steak. The tangy, creamy sauce acts as a built-in gravy, making your whole plate extra special.
As a Vegetarian Feast Centerpiece:
Serve a big bowl of these potatoes with other vibrant sides like roasted asparagus, a crisp green salad, and some crusty bread for soaking up any extra sauce. It’s a satisfying and complete meal.
For Your Holiday Table:
Move over, mashed potatoes! This dish brings a welcome and elegant change to holiday menus like Easter, Thanksgiving, or Christmas dinner. Its bright flavor cuts through the richness of other traditional dishes beautifully.
Make-Ahead and Storage
Prepare Components Separately:
You can roast the potatoes and make the sauce up to a day in advance. Store them separately in airtight containers in the fridge. Reheat the potatoes in a 350°F oven to re-crisp and warm the sauce gently on the stovetop before combining.
Storing Leftovers:
Store any combined leftovers in an airtight container in the refrigerator for up to 3 days. The sauce will continue to thicken when chilled.
Reheating for Best Results:
Reheat leftovers gently in a covered skillet over low-medium heat, adding a small splash of broth or cream to loosen the sauce if it has become too thick. Avoid the microwave if you want to preserve the potatoes’ texture.
FAQ
1. Can I use a different type of potato?
Absolutely! While baby potatoes are ideal, you can use Yukon Gold or red potatoes cut into 1 to 1.5-inch chunks. Just adjust the roasting time as needed until they are fork-tender.
2. Is there a substitute for heavy cream?
For a similar richness, full-fat coconut milk can be a dairy-free alternative, though it will impart a slight coconut flavor. For a lighter version, see the “Variations” section above.
3. My sauce is too thick/thin. How can I fix it?
If it’s too thick, whisk in a little extra broth or cream until it reaches your desired consistency. If it’s too thin, create another small cornstarch slurry (½ tsp cornstarch + 1 tsp water) and whisk it into the simmering sauce until it thickens.
I hope this recipe brings as much joy to your table as it does to mine. It’s a humble dish that feels like a hug in a bowl—creamy, comforting, and packed with flavor. Don’t forget to tag me if you make it; I love seeing your creations! Happy cooking!
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Creamy Mustard Roasted Potatoes
- Prep Time: 15 minutes
- Cook Time: 40 minutes
- Total Time: 55 minutes
- Yield: 6 1x
- Category: Side Dish
- Method: Roasting
- Cuisine: French-Inspired
Description
Crispy roasted baby potatoes smothered in a luxurious, tangy mustard and dill cream sauce. An easy, elegant side dish perfect for any occasion.
Ingredients
- 3 lb (1.36 kg) baby potatoes
- extra virgin olive oil, as needed
- kosher salt, as needed
- pepper , as needed
- 1 tbsp (14 g) butter
- 1 shallot, finely diced
- 2 garlic cloves, minced
- 1 cup (250 ml) chicken or vegetable broth
- 1 ½ tbsp (22 ml) Dijon mustard
- 1 tbsp (15 ml) grainy mustard
- ¾ cup (175 ml) heavy cream
- 1 ½ tsp (3.5 g) cornstarch
- 2 tsp (10 ml) water
- 1 tsp (5 ml) lemon juice
- 2 tbsp (30 ml) chopped fresh dill, or as needed
Instructions
- Preheat oven to 400°F. Toss potatoes with oil, salt, and pepper on a baking sheet. Roast for 35-40 mins until tender and browned.
- In a skillet, melt butter with 1 tbsp oil. Sauté shallot for 3-4 mins, add garlic for 1 min.
- Add broth, simmer to reduce by 1/3. Whisk in mustards, ½ tsp salt, ¼ tsp pepper.
- Add cream, return to a simmer. Whisk cornstarch and water into a slurry, then whisk into sauce. Cook 1 min until thickened.
- Off heat, stir in lemon juice. Layer roasted potatoes with sauce and fresh dill in a bowl. Serve.
Notes
For best results, do not overcrowd the potatoes on the baking sheet. Sauce can be made ahead and reheated gently.
Keywords: creamy mustard potatoes, roasted potato recipe, easy side dish, mustard cream sauce, potato side dish, dill potatoes
