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These Gluten Free Roast Potatoes are crispy on the outside and fluffy on the inside, and gently flavoured with hints of garlic, rosemary and sea salt flakes. Thanks to a secret ingredient these are honestly the best crispy roast potatoes without flour! Gluten free and vegan, so everyone can enjoy them.
Notes On This Crispy Roast Potatoes Recipe
- Why choose this recipe? Not only are these crispy roast potatoes completely gluten free, they are also made without flour. Because you absolutely don’t need flour to make the most delicious roasties ever!
- Secret Ingredient: Using bicarbonate of soda (baking soda in the US) while par-boiling makes these roast potatoes so fluffy inside and crispy on the outside.
- Top Tip: For the crispiest roast potatoes, always shake the potatoes in the colander to rough up the edges, and make sure the oil is *super* hot before adding the potatoes. That’s how you get crispy roast potatoes without flour!
- Updated for 2025: Readers have been loving this recipe since 2020, but I’ve updated this in October 2025 to include new step-by-step photos, detailed FAQs, and instructions on how to make these ahead of time and freeze them!
Table of Contents
- Notes On This Crispy Roast Potatoes Recipe
- Don’t just take my word for it…
- Ingredients and Substitutions
- How to Make Gluten Free Roast Potatoes
- At A Glance: 5 Tricks For Crispy Roast Potatoes
- How To Make Roast Potatoes Ahead Of Time
- Frequently Asked Questions
- Gluten Free Roast Potatoes Recipe Recipe
- More Gluten Free Roast Dinner Recipes
- Love Potatoes? You Might Also Like
Don’t just take my word for it…
Dri left a ⭐️⭐️⭐️⭐️⭐️ review and said: “Made these for Christmas Eve with the Steak And Ale Pies, and they were all DELISH!! Thank you Sarah for all your hard work and inspiring recipes 🙂“
Ingredients and Substitutions
There’s a printable recipe card below for this crispy gluten free roast potatoes recipe with the full quantities. But here are the main ingredients and ideas for any swaps:
- Potatoes: I always use King Edward potatoes for roasties as to me they are the best. Maris Pipers come a close second! In the US look for a floury potato like Yukon Golds or Russet potatoes, and elsewhere look for any general floury potato.
- Oil: I personally prefer to use vegetable oil for my roast potatoes. You can use goose fat if you prefer (or beef drippings) but I’ve always found the best results from oil.
- Bicarbonate of Soda: Or baking soda in the US. My secret weapon for fluffy insides! Adding bicarb while parboiling the potatoes turns the water alkaline, which basically helps to break down the surface of the potatoes – keeping them fluffy inside and helping them to crisp up on the inside. It’s a game changer!
- Rosemary: Optional, if you want to add a herby flavour to your potatoes. Fresh thyme also works well, if you prefer this.
- Garlic: Again, this is optional but adds a special touch to your roasties for an occasion like Christmas or Thanksgiving.
How to Make Gluten Free Roast Potatoes
There’s a printable recipe card below with the method. But here are some step-by-step photos to show you how easy these gluten free roast potatoes are to make.
At A Glance: 5 Tricks For Crispy Roast Potatoes
If you take one thing away from this post, it’s that crispy roast potatoes are possible without flour (or gluten!). Here are my 5 at-a-glance tips you need to remember:
- Always parboil the potatoes until *just* tender on the outside.
- Use bicarb (baking soda) in the water to help create fluffier, crispier roasties.
- Don’t forget to rough up the drained potatoes in the colander to increase the surface area for max crispiness.
- Let the potatoes steam dry while the oil heats to remove excess moisture.
- Use plenty of oil in the roasting tin and ensure it is SUPER hot before adding the potatoes (be careful it doesn’t splash you!)
How To Make Roast Potatoes Ahead Of Time
If you want to get ahead for an event like Christmas Dinner, you can actually make these ahead of time, ready to cook from straight from frozen! To do this:
- Follow the recipe steps to par-boil, drain and rough up the potatoes.
- Toss the potatoes in a little oil to coat them.
- Lay them out on a lined baking sheet in one layer and freeze (so they don’t clump together). Once frozen, decant into a tub or bag to store in the freezer.
- When ready to cook, follow the recipe steps to heat the oil with the garlic and rosemary, then add the potatoes to the hot oil straight from frozen. (Be careful, they may spit!) They will need an additional 10 minute to cook from frozen.
Frequently Asked Questions
Here are some FAQs about this easy gluten free roast potatoes recipe. If you can’t find the answer to your question here or in the post above, please comment and I’ll try answer!
Once cooked you can happily freeze these roast potatoes and just reheat them when you want to eat them, either in the oven or air fryer. Or I have detailed instructions above on how to prepare them ahead of time to cook them on the day.
Yes, you can! If you want to make gluten free roast potatoes in the air fryer I recommend following my air fryer roast potatoes recipe instead.
Personally I love eating cold, leftover roast potatoes dunked into cold gluten free gravy (my boyfriend says I’m weird) but you can also turn them into some great recipes! Try using them in my Boxing Day Hash, Chorizo and Sweetcorn Hash or even using them to make a Leek and Potato Soup recipe.
Yes, potatoes are naturally gluten free and completely coeliac-safe in their original form. However a lot of people cook roast potatoes with flour (though I’d argue that’s completely unnecessary!) so sometimes these are not gluten free. Other potato products like chips can also sometimes be coated in wheat flour. If you are new to a gluten free diet I have some helpful information on which grains are gluten free in my Coeliac Disease FAQs and Gluten Free Diet FAQs.
Gluten Free Roast Potatoes Recipe
Equipment
Ingredients
- 1 kg King Edward potatoes, (or other floury potato like Maris Piper, Yukon Gold or Russet)
- 3-4 tbsp vegetable oil, (or goose fat)
- 1 tsp bicarbonate of soda, (baking soda in the US)
- Salt flakes
- Sprig or rosemary, (optional)
- 2-3 garlic cloves, (optional)
Instructions
- Preheat the oven to 200’C / Fan 180’C / Gas Mark 6.
- Peel the potatoes and either leave them whole or cut in half, depending how big the potatoes are and how big you want your roasties to be!
- Half-fill a large pan with water, add a pinch of salt and bring to the boil. Once boiling, add 1 tsp bicarbonate of soda, stir, and then add the potatoes. Bring the water back up to a rolling boil and boil the potatoes for 5-7 minutes, until the outside is soft enough that you can easily pierce it with a knife.
- While the potatoes are boiling, add the vegetable oil (and whole garlic cloves/rosemary if using) to a large baking tin (big enough for the potatoes to be in a single layer). Pop the oiled tin in the oven – you want it to be in there about 10-15 minutes until it is super hot.
- When the potatoes are done, drain them in a colander then place back in the saucepan. Tightly hold the lid on and shake them enough to rough up the edges – just a few back-and-forths should do!
- Carefully remove the tin from the oven and pour the potatoes in – they should sizzle and spit a little as they go in. Turn and roll them so that they are fully coated in oil and place back in the oven.
- Roast the potatoes for 20 minutes, then turn them over. Roast for another 20-25 minutes, until golden and crisp.
- Remove from the oven, scatter with salt flakes and serve straight away.
Notes
- Top Tip: If you want super crispy roasties, don’t skip the bicarb, make sure you rough them well in the colander and ensure the oil is super hot. Be careful as the potatoes can spit when first added to the hot oil.
- Storing and Freezing: These potatoes can be frozen, then defrosted and reheated to serve. You can also keep any leftovers for 2-3 days in the fridge and reheat as needed. Or enjoy them cold!
Nutrition
More Gluten Free Roast Dinner Recipes
If you like this gluten free roast potatoes recipe then make sure you check out these other gluten free recipes for a roast dinner too…
- Gluten Free Yorkshire Puddings
- Gluten and Dairy Free Gravy
- Roasted Sprouts with Bacon and Chestnuts
- Pigs in Blankets
- Gluten Free Cauliflower Cheese
- Christmas Roast Chicken
- Make Ahead Gravy
- Roast Carrots and Parsnips
- Gluten Free Stuffing Balls
- Vegan Miso Gravy
- Cheesy Mashed Potatoes
- Gluten Free Thanksgiving Stuffing
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Love Potatoes? You Might Also Like
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Made these for Christmas eve, with the Steak And Ale Pies, and they were all DELISH!! Thank you Sarah for all your hard work and inspiring recipes 🙂
I’m so glad you loved them!!
Can I cook to par boil and shake , then freeze.
Later place frozen in baking tin with hot oil and bake – just need to do these days prior as I have 9 for Christmas lunch snd 17 for Boxing Day so lots of cooking
Hi Jane, thanks for your question, I’ve now added instructions for making these ahead and freezing, but in short, yes you can!