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    Home Β» Recipes By Meal Types Β» Allergy-Friendly Starters & Side dishes

    Crispy Slow Cooker Roast Potatoes

    Published: Sep 30, 2022 Β· Modified: Nov 1, 2022 by Lauren Β· This post may contain affiliate links Β· 4 Comments

    Jump to Recipe Print Recipe

    Crispy and crunchy on the outside yet soft and fluffy on the inside, these Crispy Slow Cooker Roast Potatoes are a great alternative way to cook your Sunday favourite! 

    pinterest image for slow cooker roast potatoes

    *Disclosure: This post may contain affiliate links - This means I receive a commission for purchases made though those links, at no cost to you. Please click here for further info*

    Roast potatoes in the slow cooker?? No, I promise you I haven’t gone crazy!

    I know a slow cooker isn’t the first kitchen gadget that would come to mind when cooking crispy roast potatoes, but I promise you they are as good, if not better than the ones you will cook in the oven!

    Not everyone has a large double oven with loads of shelves or if you are cooking a Christmas dinner with loads of extras like pigs in blankets and stuffing you may find yourself running out of shelves in the oven! Try cooking the potatoes in the slow cooker, I promise you won’t be disappointed.

    Made with only 5 ingredients, you will par-boil them in the same way you normally would, then let them roast away in the slow cooker, leaving you to concentrate on the rest of the dinner or entertaining your guests!

    If you don’t have a slow cooker, why not try my garlic & rosemary mini hasselback potatoes instead.

    These potatoes are free from the top 14 allergens so can be enjoyed by people with the most common food allergies.

    Serve these crispy potatoes with your roast alongside my braised red cabbage with red win, roasted carrots with green beans and gluten free cauliflower cheese for a warm and hearty dinner.

    slow cooker roast potatoes in a bowl with a spoon. The bowl is sat on a hessian place. mat, garnished with parsley.
    Jump to:
    • πŸ… Ingredients Needed
    • ✏️ How To Make Slow Cooker Roast Potatoes
    • πŸ’‘ Expert Tips!
    • ⚑ Variations
    • πŸ”ͺ Equipment
    • 🍱 Storage
    • 🍴 Serving Suggestions
    • πŸ’¬ Recipe FAQ's
    • Crispy Slow Cooker Roast Potatoes

    🍅 Ingredients Needed

    ingredients laid out to make slow cooker roast potatoes.
    • Potatoes -  I love Maris Piper potatoes for roasting as you get the crispy outside and the soft fluffy inside. King Edwards would be my second choice, however you can use any white potato you have at home.
    • Onion Salt - This is used to give some flavour to the potatoes alongside the garlic granules.
    • Garlic Granules - I have used granules for ease, however you can use fresh chopped garlic cloves too.
    • Dried Rosemary - Rosemary pairs with roast potatoes beautifully and is a classic flavour combination alongside the garlic. Feel free to use fresh if you have some, just use double the amount and chop finely.
    • Olive Oil - I love Felippo Berio olive oil. As olive oil has a high smoke point of around (190˚C - 207˚C / 374˚F - 405˚F) and the slow cookers highest heat is around 150˚C, it is a great and safe oil to use as you will still get all of the health benefits from the oil.

    Scroll to the recipe card for quantities.

    ✋ Be sure to double check all packaging for allergens. ✋

    ✏️ How To Make Slow Cooker Roast Potatoes

    potatoes being chopped on a chopping board.

    Start by pouring the olive oil in the slow cooker and turn onto the “high” setting. Leave this to heat up while you prepare and par boil the potatoes. You want the oil to be hot by the time you put the potatoes into the slow cooker. This should take about 20 minutes.

    Peel the potatoes and chop into thirds/quarters depending on how big the potatoes are.

    potatoes in a saucepan that have been fluffed up ready to roast in the oven.

    Par-boil the chopped potatoes in a saucepan for around 10 minutes. You don’t want to cook them until they are completely cooked, just enough to soften them slightly.

    Drain the potatoes in a colander, then put the potatoes back in the saucepan, put the lid on and give the saucepan a little shake, this helps to fluff up the outside of the potatoes which gives you the crunchy and crispy crust.

    roast potatoes in a slow cooker.

    Leave the potatoes to cool slightly, then place them into the slow cooker with the onion salt, garlic granules and dried rosemary and give it a good stir.

    Place a clean, dry tea towel over the top of the slow cooker, then place the lid on top of the tea towel. Wrap the sides of the tea towel that are hanging out, up onto the lid.

    slow cooker with a tea towel under the lid to collect the steam.

    Cook on high for around three hours, turning the potatoes every hour.

    This will result in perfect, crispy, fluffy roast potatoes.

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    💡 Expert Tips!

    • Putting the tea towel in between the potatoes and the lid collects all the steam produced and holds it in the tea towel. If you don’t do this, the steam that rises to the lid will fall back down onto the potatoes making them soft and soggy. Whilst I have done this a number of times without any problems, I wouldn’t recommend leaving the house whilst the potatoes are cooking.
    • Go carefully when shaking the potatoes! Gentle is best as they can sometimes break down into smaller pieces if you are shaking too hard.
    • It's best to only use enough potatoes to cover the bottom of the slow cooker, if you start piling them on top of each other, they will sweat instead of roast and you won’t get that crispy finish.

    ⚡ Variations

    • Go Fresh! - I have used dried garlic and rosemary for ease, but feel fresh to use fresh if you prefer. Use 2 cloves of garlic minced with a garlic press and a sprig of fresh rosemary, picking the leaves and chopping them finely, discarding the stem.
    • Mix up the spices! - For a spicer version, omit the rosemary and swap the onion and garlic for a teaspoon each of ground cumin and turmeric.
    • Swap the herbs! - Swap the rosemary for some fresh or dried thyme and add in a squirt of lemon juice.
    • Go posh! - Swap the olive oil for the same amount of goose fat.

    🔪 Equipment

    Slow Cooker

    Colander

    Saucepan

    🍱 Storage

    Roast potatoes are always best eaten fresh. It is perfectly safe to store the cooked potatoes in the fridge for a few days in an airtight container and then re-heat them in the oven at 200˚C/400˚F for 10-15 minutes until piping hot through.

    To freeze, place flat on a baking tray for an hour until frozen through, then transfer to a freezer bag where they can be kept frozen for up to 3 months. You can cook them from frozen in the oven at 200˚C/400˚F for 20 minutes.

    🍴 Serving Suggestions

    Roast potatoes traditionally belong with a roast dinner, which normally consists of your roasted meat (normally beef, lamb or chicken) and loads of veg, but there is nothing stopping you from serving these with anything!

    Serve with some sausages, green beans and lashings of gravy, or with a nice steak instead of chips.

    close up of slow cooker roast potatoes in a bowl with a spoon picking up one potato.

    💬 Recipe FAQ's

    Do you need to boil the potatoes before roasting?

    Par boiling them before putting in the slow cooker or oven helps form that crispy crust. If you roast them without par-boiling, the outside of the potato stays tough and hard as the fat won’t get into all  of the crevices

    Can I make roast potatoes ahead of time?

    Yes! You can par boil the potatoes, drain and leave them to air dry, then coat them in a little oil and store in the fridge until you are ready to put them in the slow cooker or oven.

    💫 Love this recipe? It would be great if you could leave a 5 ⭐ rating and comment below! Thanks x 💫

    close up of roast potatoes in a bowl with a spoon.

    Crispy Slow Cooker Roast Potatoes

    Crispy and crunchy on the outside yet soft and fluffy on the inside, these Crispy Slow Cooker Roast Potatoes are a great alternative way to cook your Sunday favourite! 
    4.19 from 11 votes
    Print Recipe Pin Recipe
    Prep Time 15 mins
    Cook Time 3 hrs
    Total Time 3 hrs 15 mins
    Course Side Dish
    Cuisine British
    Servings 4 servings
    Calories 259 kcal

    Equipment

    • Slow cooker
    • Saucepan
    • Colander

    Ingredients
      

    • 4 maris piper potatoes Use enough potatoes to cover the bottom of the slow cooker.
    • 1 teaspoon onion salt
    • 1 teaspoon garlic granules
    • 1 teaspoon dried rosemary
    • 4 tablespoon olive oil

    Instructions
     

    • Start by pouring the olive oil in the slow cooker and turn onto the “high” setting. Leave this to heat up while you prepare and par boil the potatoes. You want the oil to be hot by the time you put the potatoes into the slow cooker. This should take about 20 minutes.
    • Peel the potatoes and chop into thirds/quarters depending on how big the potatoes are.
    • Par-boil the chopped potatoes in a saucepan for around 10 minutes. You don’t want to cook them until they are completely cooked, just enough to soften them slightly.
    • Drain the potatoes in a colander, then put the potatoes back in the saucepan, put the lid on and give the saucepan a little shake, this helps to fluff up the outside of the potatoes which gives you the crunchy and crispy crust.
    • Leave the potatoes to cool slightly, then place them into the slow cooker with the onion salt, garlic granules and dried rosemary and give it a good stir.
    • Place a clean, dry tea towel over the top of the slow cooker, then place the lid on top of the tea towel. Wrap the sides of the tea towel that are hanging out, up onto the lid.
    • Cook on high for around three hours, turning the potatoes every hour.

    Notes

    • Putting the tea towel in between the potatoes and the lid collects all the steam produced and holds it in the tea towel. If you don’t do this, the steam that rises to the lid will fall back down onto the potatoes making them soft and soggy. Whilst I have done this a number of times without any problems, I wouldn’t recommend leaving the house whilst the potatoes are cooking.
    • Go carefully when shaking the potatoes! Gentle is best as they can sometimes break down into smaller pieces if you are shaking too hard.
     
    • It's best to only use enough potatoes to cover the bottom of the slow cooker, if you start piling them on top of each other, they will sweat instead of roast and you won’t get that crispy finish.

    Nutrition

    Calories: 259kcalCarbohydrates: 30gProtein: 4gFat: 14gSaturated Fat: 2gPolyunsaturated Fat: 2gMonounsaturated Fat: 10gSodium: 601mgPotassium: 725mgFiber: 4gSugar: 1gVitamin A: 4IUVitamin C: 34mgCalcium: 22mgIron: 1mg
    Keyword roast potatoes, slow cooker
    Tried this recipe?Let us know how it was!

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    1. Tony smith

      November 26, 2022 at 1:31 pm

      I haven't tried it yet but I will let you know when I have

      Reply
      • Lauren Woodger

        December 02, 2022 at 10:47 am

        I hope you like them! πŸ™‚

        Reply
    2. Maureen Bennett

      December 22, 2022 at 4:08 pm

      5 stars
      One converted sceptic! Absolutely amazing.... who'd have thought a slow cooker would make such gorgeous roasties. Genius idea πŸ‘

      Reply
      • Lauren Woodger

        December 22, 2022 at 4:11 pm

        So glad you liked the recipe - I always cook them like this now when Im short on space in the oven. πŸ™‚

        Reply

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