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    Home » Recipes » Slow Cooker

    Slow Cooker Peanut Swirl Brownies

    image of Lucy's face
    Modified: Nov 10, 2025 · Published: May 8, 2014 by bakingqueen74 · This post may contain affiliate links · 2 Comments
    1022 shares
    Jump to Recipe

    These are gooey peanut swirl brownies baked in your slow cooker! They look good enough to eat even before cooking.

    Brownies with peanut swirl marbled through in slow cooker pot.

    I was inspired to try out peanut swirl brownies by a photo and recipe I saw on Pinterest by Love and Olive Oil.

    It looked absolutely delicious! So I decided to try my own slow cooker peanut swirl brownies.

    Jump to:
    • Slow cooker bakes
    • Ingredients
    • Method
    • More slow cooker baking
    • Related
    • Recipe
    • Reviews

    Slow cooker bakes

    Baking in the slow cooker is one of my favourite pastimes, it takes time but you can just leave it and get on with something else!

    Armed with my inspiration, I set about to make my own version using a standard brownie recipe with added peanut swirl.

    I was pleased to see that my brownie batter with the peanut swirl topping looked wonderful even before cooking!

    After an hour it looked like this, it has started to rise and bake around the edges.

    Brownies cooking in slow cooker pot.

    When finished the peanut swirl brownies were fudgy with great flavour from the peanut butter.

    Cooked brownies before cutting.

    Lovely to share for a naughty treat! The family loved this and I get a lot of requests to make them again.

    Brownies with peanut butter layer.

    Ingredients

    Here’s what you will need to make these brownies in your slow cooker.

    • butter
    • dark chocolate
    • plain flour
    • light brown sugar
    • peanut butter
    • icing sugar

    Method

    Here are the instructions for making these slow cooker peanut swirl brownies with hints and tips.

    See the recipe card at the end of the post for the quantities.

    1. Chop the butter and chocolate up into small pieces and put in a bowl. Microwave on high for 1-2 minutes until melted. Allow to cool.
    2. Whisk the light brown sugar and eggs together for 3-5 minutes using an electric mixer, until it looks thick and creamy.
    3. Pour the cooled chocolate and butter mixture over the egg and sugar mixture and fold it in gently until completely mixed.
    4. Sieve in the flour and again fold in gently until completely incorporated, but do not overmix.
    5. Grease and line your slow cooker bowl with grease proof paper.
    6. Pour the brownie batter in.
    7. Mix the butter, peanut butter and icing sugar together in a small bowl, until smooth.
    8. Use a spoon to dollop it on top of the brownie batter.
    9. Swirl it together with the brownie batter with a knife.
    10. Cook on high for 2-3 hours until just set in the centre. Allow to cool a little before using the baking paper to remove from the slow cooker.

    Cut into triangles and enjoy warm!

    Three brownie triangles with peanut swirl.

    More slow cooker baking

    I’ve also written all about baking in the slow cooker where you can find loads of tips for baking in a slow cooker along with tonnes of slow cooker baking recipes for cakes, scones, cookies, brownies, desserts, bread and much much more!

    A triangle of peanut swirl brownie with a fudgy centre.

    These slow cooker peanut brownies are delicious for dessert or with a cup of coffee for a cheeky treat.

    Delicious slice of brownie with peanut swirl.

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    Recipe

    Chocolate brownies swirled with peanut butter in slow cooker pot.

    Slow Cooker Peanut Swirl Brownies

    By Lucy Allen | BakingQueen74
    Bake these tasty brownies with a peanut butter swirl in your crockpot!
    5 from 2 votes
    Prep Time: 15 minutes minutes
    Cook Time: 3 hours hours
    Total Time: 3 hours hours 15 minutes minutes
    Servings: 8
    Course: Dessert
    Cuisine: Slow Cooker
    Calories: 465kcal
    Rate Save Saved! Pin Print

    Ingredients

    For the brownies:

    • 125 g (½ cups + 1 tbsp) unsalted butter
    • 125 g (½ cups + 3 tbsp) good quality dark chocolate
    • 80 g (½ cups) plain flour (all-purpose flour)
    • 2 eggs
    • 185 g (¾ cups + 3 tbsp) light brown sugar

    For the peanut butter swirl:

    • 40 g (3 tbsp) unsalted butter
    • 100 g (¼ cups + 1 tbsp) smooth peanut butter
    • 40 g (¼ cups) icing sugar

    Equipment

    oval slow cooker
    oval slow cooker
    mixing bowl
    mixing bowl
    spatula
    spatula

    Instructions
     

    • Chop the butter and chocolate up into small pieces and put in a bowl. Microwave on high for 1-2 minutes until melted. Allow to cool.
      125 g unsalted butter, 125 g good quality dark chocolate
    • Whisk the light brown sugar and eggs together for 3-5 minutes using an electric mixer, until it looks thick and creamy.
      185 g light brown sugar, 2 eggs
    • Pour the cooled chocolate and butter mixture over the egg and sugar mixture and fold it in gently until completely mixed.
    • Sieve in the flour and again fold in gently until completely incorporated, but do not overmix.
      80 g plain flour (all-purpose flour)
    • Grease and line your slow cooker bowl with grease proof paper.
    • Pour the brownie batter in.
    • Mix the butter, peanut butter and icing sugar together in a small bowl, until smooth.
      40 g unsalted butter, 100 g smooth peanut butter, 40 g icing sugar
    • Use a spoon to dollop it on top of the brownie batter.
    • Swirl it together with the brownie batter with a knife.
    • Cook on high for 2-3 hours until just set in the centre. Allow to cool completely before using the baking paper to remove from the slow cooker.

    Notes

    Note: Timings depend on your slow cooker. Check after an hour if you have a slow cooker that cooks fast (e.g. a sear and stew). If you have a slow one like me it could take 2-3 hours.
    Storage
    Keep in an airtight container for 2-3 days after cooking.
    Can be frozen, best used within 3 months of freezing.
    Have you made this recipe?Please leave a star rating and comment below to let me know how you got on!

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    Reader Interactions

    Comments

    1. Sarah says

      January 01, 2016 at 1:14 pm

      these look so so good! Screw the January detox!

      Reply
    2. Laura@Baking in Pyjamas says

      May 18, 2014 at 6:37 pm

      I can imagine those tasted delicious, I love peanut butter and chocolate together. Thanks for linking up to Sweet and Savoury Sunday, stop by and link up again. Have a great day!!

      Reply
    5 from 2 votes (2 ratings without comment)

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    Hi, I'm Lucy! I'm a slow cooker addict, food blogger and also a busy working mum of two. I hope you'll enjoy the recipes I create and post which are perfect for busy families.

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