This oven baked 3-ingredients dijon mustard baby potatoes recipe is the kind of tangy side dish secret you pass along at church potlucks. My neighbor shared it with me after I kept going back for “just one more spoonful” at a Sunday luncheon. You only need baby potatoes, Dijon mustard, and a little oil to get that vibrant yellow glaze and perfect crunch on the edges. It’s a simple, no-fuss recipe that’s easy enough for a weeknight but special enough for company, and it bakes up beautifully on a foil-lined sheet pan for quick cleanup.
These potatoes are wonderful alongside roast chicken, grilled pork chops, or baked salmon. I like to pile them next to a green vegetable like steamed broccoli, sautéed green beans, or a simple salad to balance the tangy mustard flavor. They’re also a hit on potluck tables with meatloaf, ham, or brats, and any leftovers reheat well in the oven or air fryer for a quick lunch the next day.
Oven Baked 3-Ingredients Dijon Mustard Baby PotatoesServings: 4
Ingredients
2 pounds baby potatoes, washed and halved
3 tablespoons Dijon mustard
2 tablespoons vegetable or canola oil
Directions
Preheat your oven to 425°F (220°C). Line a large baking sheet with aluminum foil for easy cleanup and lightly crinkle the foil so the potatoes have little ridges to rest on for extra crisping.
Pat the washed, halved baby potatoes dry with a clean kitchen towel or paper towels. Dry potatoes crisp up better in the oven.
In a large bowl, whisk together the Dijon mustard and oil until smooth and well combined. It should look like a loose, glossy mustard sauce.
Add the potato halves to the bowl and toss thoroughly until every piece is coated in the mustard mixture. Take a moment to turn any dry spots back into the sauce so the potatoes get that even yellow glaze.
Spread the coated potatoes out in a single layer on the foil-lined baking sheet, cut sides down. Make sure they’re not crowded; a little space between them helps them brown and crisp instead of steam.
Place the baking sheet on the middle rack and bake for 20 minutes. Do not stir during this first stretch so the cut sides can develop a good crust.
After 20 minutes, carefully remove the pan and use a spatula to flip the potatoes. Return to the oven and bake for another 15–20 minutes, or until the potatoes are tender when pierced with a fork and the edges are golden brown and crispy.
Let the potatoes rest on the baking sheet for 3–5 minutes before serving so the coating sets a bit. Serve hot, scraping up any extra crispy bits from the foil—they’re the best part.
Variations & Tips
For families with picky eaters, you can use half Dijon and half yellow mustard to soften the tang, or choose a milder Dijon. If your crew likes things extra crispy, leave the potatoes in for an additional 5 minutes, watching closely so they don’t over-brown. You can also cut the baby potatoes into quarters for smaller, crunchier bites (just reduce the baking time by 5 minutes and check for doneness). For a little extra richness, drizzle a teaspoon or two of melted butter over the potatoes right after baking. If you need to stretch the recipe for a crowd, add up to 1 more pound of potatoes and bump the mustard and oil up slightly so everything still gets a good coating, then use two sheet pans so they roast instead of steam. Leftovers reheat nicely on a foil-lined sheet at 400°F for about 10 minutes, which brings the crisp edges right back.
