Balsamic mustard potatoes with onion

Balsamic mustard potatoes with onion is a simple and flavorful side dish that pairs mustard and balsamic vinegar with roasted potatoes and onions for a deliciously tangy experience. This oven-roasted recipe is perfect for family dinners or gatherings.

12 Nov 2025
Cook time 15 min
Prep time 70 min

Ingredients:

8 potatoes
2 tbsp mustard
1 tbsp vinegar
1 tbsp olive oil
1/2 tsp black pepper
1/2 onion
Balsamic mustard potatoes with onion

Balsamic mustard potatoes with onion is a flavorful and easy-to-make side dish that combines the tangy taste of mustard and vinegar with the savory notes of potatoes and onions. This recipe is perfect for a family dinner or a get-together with friends. The combination of ingredients provides a delicious balance of flavors that will elevate any meal.

Instructions:

1. Preheat Your Oven:
- Preheat your oven to 425°F (220°C).
2. Prepare the Potatoes:
- Wash and peel the potatoes if desired. Cut them into bite-sized pieces, approximately 1-inch cubes, for even cooking.
3. Mix the Sauce:
- In a small bowl, combine the 2 tablespoons of mustard, 1 tablespoon of balsamic vinegar, and 1 tablespoon of olive oil. Mix until fully combined and smooth.
4. Seasoning:
- In a large bowl, place the potato pieces. Drizzle the mustard mixture over the potatoes. Add 1/2 teaspoon of black pepper and gently toss to ensure all the potatoes are evenly coated.
5. Prepare the Onion:
- Peel and chop the 1/2 onion into small, evenly sized pieces.
6. Combine and Arrange:
- Add the chopped onion to the bowl of potatoes and give it a final toss to combine everything.
7. Roasting:
- Spread the coated potatoes and onions in a single layer on a baking sheet. Make sure they are not overcrowded to ensure they roast evenly and become crispy.
8. Bake:
- Roast in the preheated oven for about 30-40 minutes, or until the potatoes are golden brown and crispy on the outside and tender on the inside. Stir or flip the potatoes halfway through the cooking time to ensure even roasting.
9. Serve:
- Once done, remove the baking sheet from the oven and let the potatoes cool for a few minutes before serving.
- Transfer the balsamic mustard potatoes with onion to a serving dish.
10. Enjoy:
- Serve warm as a side dish to your favorite main course or enjoy them on their own!

Your balsamic mustard potatoes with onion are now ready to be served. The tender potatoes combined with the zesty mustard and balsamic vinegar create a mouthwatering experience. This versatile dish can be paired with a variety of mains, from grilled meats to a hearty salad. Enjoy this delightful addition to your meal!

Balsamic mustard potatoes with onion FAQ:

What is the baking time for balsamic mustard potatoes?

Bake the potatoes in a preheated oven at 425°F (220°C) for about 30-40 minutes, or until they are golden brown and crispy on the outside and tender on the inside. Stir or flip them halfway through for even cooking.

How do I know when the potatoes are done?

The potatoes are done when they are golden brown and crispy on the outside, and fork-tender on the inside. A fork should easily pierce through the potato without too much resistance.

Can I make any substitutions for the mustard in this recipe?

Yes, you can substitute the mustard with a different type of mustard, such as honey mustard or Dijon, depending on your taste preference. Keep in mind that this may alter the flavor profile slightly.

How should I store leftovers?

Store any leftover balsamic mustard potatoes in an airtight container in the refrigerator for up to 3-4 days. Reheat in the oven for the best texture, or use a microwave for convenience.

What size baking sheet should I use?

Use a standard rimmed baking sheet (about 18x13 inches) for this recipe. Spreading the potatoes in a single layer ensures they roast evenly and become crispy.

Tips:

- Choose starchy potatoes like russets for a fluffier texture.

- You can add a pinch of sugar to the mustard mixture for a slight sweetness if desired.

- Try roasting the potatoes in the oven at 400°F (200°C) for about 25-30 minutes for a crispy texture.

- Mix the potatoes halfway through cooking to ensure even coating and cooking.

- Fresh herbs like rosemary or thyme can be added for extra flavor.

Nutrition per serving

4 Servings
Calories 270kcal
Protein 7g
Carbohydrates 60g
Fiber 8g
Sugar 3.42g
Fat 3.95g

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