These polenta roast potatoes are the ultimate side dish for any roast dinner or weeknight meal. The polenta coating gives the potatoes a golden, crunchy crust while keeping the inside soft and fluffy. Simple, fuss-free, and packed with flavour, they're guaranteed to become a family favourite.
Save this recipe for later?
Enter your email and I’ll send it your way!
A Quick Look At The Recipe
✅ Recipe Name: Polenta Roast Potatoes
🕒 Ready In: 1 hour 5 minutes
👪 Serves: 6
🍽 Calories: 285 per serving
🥣 Main Ingredients: Potatoes, Olive Oil, Polenta
📖 Dietary Info: Vegetarian, gluten-free, dairy-free
👌 Difficulty: Easy
Summarise & Save This Content On
The polenta coating gives these roast potatoes an irresistible crunch. In just a few simple steps, you'll have roasties that taste restaurant-quality - perfect for Sunday lunches, festive dinners, or a midweek treat.
Love roast potatoes? Try my easy duck fat roast potatoes, air fryer roast potatoes and slow cooker roast potatoes.
Jump to:
- A Quick Look At The Recipe
- ✔️ Why you'll love these polenta roast potatoes
- 🥘 Ingredients
- Need to substitute an ingredient?
- 📖 Variations
- 🔪 How to make polenta roast potatoes
- Tips for Perfect Polenta Roast Potatoes
- 🍴 Serving suggestions
- Storage
- ❓ Frequently asked questions
- Troubleshooting Guide
- 😋Related recipes
- Recipe
- 💬 Comments
✔️ Why you'll love these polenta roast potatoes
- Perfectly crispy every time - golden, crunchy edges with soft, fluffy centres.
- Ideal with any roast - pairs beautifully with beef, chicken, pork, or a vegetarian roast.
- Make ahead or freeze - can be frozen and roasted straight from the freezer for convenience.
🥘 Ingredients
A full ingredients list along with Metric and US Customary measurements, can be found in the recipe card at the end of this post.
Maris Piper or King Edward Potatoes - These floury varieties give the crispiest roast potatoes with fluffy centres. US substitutes: Russet or Yukon Gold potatoes work well.
Olive Oil - Adds healthy fat and helps the potatoes crisp up beautifully. Substitute: Canola oil, vegetable oil, or even melted butter for extra flavour.
Polenta - Creates a golden, crunchy crust on the outside. Substitute: Cornmeal (fine or medium grind) works in the US.
Rosemary - Adds a fragrant, earthy flavour that complements roast potatoes perfectly. Substitute: Thyme or sage if preferred.
Sea Salt - Essential for seasoning and enhancing flavour. Substitute: Kosher salt or table salt.
Need to substitute an ingredient?
Have an allergy or dietary preference? Let AI customise the recipe for you.
📖 Variations
- Semolina coating - swap polenta for semolina flour to create a slightly different, golden crunch.
- Herb combinations - experiment with fragrant herbs like rosemary, thyme, oregano, or bay leaves for extra flavour. Adding whole garlic cloves in their skins while roasting gives a subtle, caramelised garlic aroma.
- Richer fat options - use goose fat or duck fat instead of olive oil for an indulgent, restaurant-style crispiness.
- Sweet potato roasties - try roasting sweet potatoes instead of white potatoes for a naturally sweet twist. No need to par-boil sweet potatoes first - they roast beautifully straight from raw.
- Spice it up - add smoked paprika, black pepper, or chilli flakes to the polenta coating for a slightly spicy, flavour-packed edge.
- Cheesy crunch - toss the potatoes with finely grated parmesan or pecorino before roasting for an irresistible cheesy crust.
🔪 How to make polenta roast potatoes
The recipe card with ingredient quantities and detailed instructions can be found at the bottom of the post
One: Preheat the oven to 220°C / 200°C fan / 425°F / Gas Mark 7.
Two: Peel the potatoes and cut any larger ones in half or quarters so all pieces are roughly the same size.
Three: Place the potatoes in a large pan of salted water and bring to a rolling boil over high heat. Boil for 8-10 minutes until the edges just start to soften.
Four: Drain immediately, shake to rough up the edges, and let the potatoes steam dry in a colander for 5 minutes. This removes excess moisture and helps achieve a crispy crust. Meanwhile place 3 tablespoons of olive oil in a roasting pan and put it in the oven to heat.
Five: Return the potatoes to the empty pan (make sure there's no water left). Add the polenta and shake gently to rough up the edges and coat each potato evenly.
Six: Carefully remove the preheated roasting pan from the oven. Tip in the potatoes and use a spoon to coat each one in the hot oil.
Seven: Roast for 30 minutes, turning halfway through to ensure even browning.
Eight: After 30 minutes, baste the potatoes with the oil in the pan, then return to the oven for a further 15-20 minutes until golden, crispy, and cooked through.
Nine: Sprinkle with freshly chopped rosemary and season with sea salt. Serve immediately for the crispiest results.
Tips for Perfect Polenta Roast Potatoes
- Optional flavour boost - add smoked paprika, parmesan, or a drizzle of truffle oil just before serving.
- Choose the right potato - floury varieties like Maris Piper or King Edward give the best texture.
- Don't overcrowd the tray - give each potato space so the edges crisp up.
- Shake before roasting - roughing up the edges in the colander creates maximum crunch.
🍴 Serving suggestions
The polenta roasties are great with slow cooker roast beef, air fryer whole chicken, turkey crown, slow cooker lamb breast or roast pork.
I also serve them with easy weekday dinners like slow cooker pork chops, savoury mince, baked cornflake chicken nuggets and lamb tagine.
Storage
Store - Keep cooled roast potatoes in an airtight container in the fridge for up to 3 days.
Freeze (after roasting or par-boiling) -
- After roasting: Spread cooled roast potatoes on a baking tray and freeze for 1-2 hours, then transfer to a freezer-safe bag or container. Store for up to 3 months.
- After par-boiling: Peel, chop, and par-boil the potatoes as usual, then cool completely. Flash freeze in a single layer on a baking tray for 1-2 hours, then transfer to a freezer-safe bag or container. They'll keep for up to 3 months.
Reheat (roasted potatoes) - at 220°C /200°C (fan) /400°F /Gas 6 for 10-15 minutes until hot and crispy.
❓ Frequently asked questions
Potatoes can be roasted in many types of oils and fats such as vegetable oil, goose fat and duck fat. The healthiest oil for roasting potatoes is olive oil, which also results in the crispiest roast potatoes too.
Yes - par‑boiling helps create a light, fluffy interior and roughens the edges so the polenta coating sticks and crisps perfectly.
Yes - you can par‑boil and coat the potatoes in polenta, then cool completely. Flash freeze in a single layer and store in freezer-safe bags until ready to roast.
Troubleshooting Guide
| Problem | Fix |
|---|---|
| Potatoes turn out soggy or limp | Make sure to dry them thoroughly after par‑boiling. Don't overcrowd the roasting tray so hot air can circulate around each potato. |
| Potatoes stick to the tray | Preheat the roasting tray with oil so the potatoes sizzle when added. Use enough fat and turn them carefully during cooking. |
| Uneven cooking - some pieces crisp, others soft | Cut all potatoes to a similar size and turn them halfway through roasting for even browning. |
😋Related recipes
More tasty potato side dishes to try:
Tried it? Let me know what you think and rate it ⭐️ below. Tag me @effortlessf00d-I'd love to see! Don't forget to subscribe for more recipes.
Recipe
Polenta Roast Potatoes
Save this recipe for later?
Enter your email and I'll send it your way!
Ingredients
- 1.5 kg Maris Piper Potatoes peeled and cut into half or quarters depending on size
- 3 tablespoon Olive Oil
- 50 g Polenta
- 1 teaspoon Sea Salt
- 1 Rosemary sprig
Instructions
- Preheat the oven to 220°c (200 fan/ 425F/ Gas 7).
- Place the potatoes in a large pan of salted water and bring to a rolling boil over high heat. Boil for 8-10 minutes until the edges just start to soften.1.5 kg Maris Piper Potatoes
- Drain immediately, shake to rough up the edges, and let the potatoes steam dry in a colander for 5 minutes. This removes excess moisture and helps achieve a crispy crust. Meanwhile place 3 tablespoons of olive oil in a roasting pan and put it in the oven to heat.3 tablespoon Olive Oil
- Return the potatoes to the empty pan (make sure there's no water left). Add the polenta and shake gently to rough up the edges and coat each potato evenly.50 g Polenta
- Carefully remove the preheated roasting pan from the oven. Tip in the potatoes and use a spoon to coat each one in the hot oil. Season with salt.1 teaspoon Sea Salt
- Roast for 30 minutes, turning halfway through to ensure even browning. After 30 minutes, baste the potatoes with the oil in the pan, then return to the oven for a further 15-20 minutes until golden, crispy, and cooked through.1 Rosemary sprig
- Sprinkle with freshly chopped rosemary and season with more sea salt. Serve immediately for the crispiest results.1 Rosemary sprig
Natalie says
I'm trying this tonight. Potatoes look so crispy and delicious. What a lovely recipe. Definitely a keeper.
Beth says
This is soon to be my family's favorite recipe! Can't wait to give this a try! Looks so delicious and yummy!
Jess says
I love the crispy outside on these potatoes. Makes for the perfect bite!
veenaazmanov says
Delicious and so easy and I just love these tempting Crispy Polenta Roast Potatoes.Perfect as a party platter too. Thanks for your recipe.
Alisa Infanti says
These were delish! The crispy coating and soft centre were to die for!
Shashi says
We adore potatoes and have never had them with a polenta coating so Im looking forward to trying this soon!
Lisa | Garlic & Zest says
What a great way to add texture to roasted potatoes! I'd never heard of this technique, but I have a package of cornmeal, so I'll have to try it!
Ana Frias says
Perfect combination of flavors! Never thought of using polenta for this but it's now a favorite. Thanks for the recipe!
patty @ Spoonabilities says
I never thought of coating potatoes with polenta. These potatoes truly look spectacular and so crispy! Yum!
Wanda says
I'm completely fascinated by this recipe! Bookmarking so I can make it for the family!