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    Home » DESSERTS & BAKING » SMALL BAKES

    5-Ingredient Lemon Slice With Condensed Milk

    Published: December 7, 2020 · Updated: July 18, 2022 by Ieva · This post may contain affiliate links · 16 Comments

    Jump to Recipe

    Creamy, sweet and tangy Lemon Slice that you can make using only 5 ingredients! Extremely easy to make, this is a perfect first bake if you’re a beginner or just fancy a no-fuss dessert! This Easy Lemon Slice with condensed milk can be decorated with lemon zest or raspberries if you want to impress!

    Take Me To:
    • Have Leftover Condensed Milk?
    • What Does A 5-Ingredient Lemon Slice Taste Like?
    • Ingredients and Substitutes
    • Method
      • STEP 1: Make The Biscuit Base
      • STEP 2: Make the Lemon Slice Filling
      • STEP 3: Bake and Decorate
    • How To Store 5-Ingredient Lemon Slices?
    • Other Easy Dessert Recipes
    • Recipe Card

    Have Leftover Condensed Milk?

    After making my Easy Eggnog for the Christmas Lattes, I had half a tin of condensed milk to use and were looking for ideas. I normally make a key lime pie (Seb’s favourite recipe here) with condensed milk, but this time, I decided to use lemons. Only having half of a tin of condensed milk to spare, I used a loaf tin for this recipe instead of making a large round pie. I used a 2 lbs loaf tin for this recipe. But you can easily double the recipe. Just make sure you use a tin twice as big for the slices to be ready in the same amount of time.

    What Does A 5-Ingredient Lemon Slice Taste Like?

    I love citrus desserts, be it a classic Tart au Citron, Key Lime Pie or a Lemon Cheesecake. This simple 5 ingredient lemon bar has an element of each of the above, really. Creamy as cheesecake, tangy as Lemon Tart and has a lovely biscuit base just like our favourite key lime pie.

    Four lemon slices on a black board.

    Ingredients and Substitutes

    • oat biscuits: can be substituted with digestive biscuits or Graham Crackers.
    • butter: you can use salted or unsalted in this recipe. I personally like salted butter to counterbalance the sweetness of condensed milk and the tart of the lemon in the filling.
    • condensed milk: sweetened.
    • lemon juice: from approx. 1.5 lemons for this recipe.
    • eggs: medium in the UK, large in the US.

    Method

    STEP 1: Make The Biscuit Base

    To make these Easy Lemon Slices, preheat the oven to 160°C Fan. Crush 100g of oat biscuits into fine crumbs. I simply put them in a large mixing bowl and bash them with the end of a rolling pin, but use a food processor if you have one (we love Kenwood) I then mix them with 50g of melted butter.

    crushing oat biscuits with the end of a rolling pin in a metal bowl.
    Adding butter to the crushed biscuits.

    With the back of a tablespoon or a spatula, press the buttery biscuit mixture into a baking-parchment lined loaf tin/ baking tray (with a surface area of about 250cm²). Make sure to get the mixture into all four corners. Then pop in the oven to bake for 10 minutes.

    STEP 2: Make the Lemon Slice Filling

    In the meantime, using an electric whisk, beat the condensed milk, eggs and lemon juice in a large bowl. I’ve tried using freshly squeezed lemon juice and the juice from the bottle. The latter was more tart, but both worked really well. Beat the mixture for 2-3 minutes, until slightly increased in volume.

    STEP 3: Bake and Decorate

    When the base is baked, pour the lemon mixture on top and return to the oven for 15-20 minutes until the filling sets. Cool completely at room temperature, then chill in the fridge for at least 2 hours before cutting your lemon slice with condensed milk into bars.

    If you wish, you can decorate with icing sugar, lemon zest or raspberries, or even pipe some dark chocolate on top.

    Tree 5-ingredient lemon bars on a black slate with a lemon in the background.

    How To Store 5-Ingredient Lemon Slices?

    Keep the lemon slices in the fridge for up to 4 days. However, take them out of the fridge 15-30 minutes before serving as they taste better at room temperature. We find these slices don’t freeze very well.

    Other Easy Dessert Recipes

    If you’re looking for other easy desserts and bakes to make, have a look at the following:

    • Spiced Oat & Cranberry Cookies
    • Easy Apple Crumble Traybake
    • 10-Minute Coconut Yogurt Dessert

    Recipe Card

    Lemon Slices

    5-Ingredient Lemon Slice With Condensed Milk

    Lovely creamy, sweet and tangy Lemon Slices that you can make using only 5 ingredients! Extremely easy to make, this is a perfect first bake if you're a beginner or just fancy a no-fuss dessert! Decorate your Lemon Slice with Condensed Milk with lemon zest and raspberries for more of a wow factor!
    5 from 11 votes
    Print Recipe Pin Recipe
    Prep Time 10 mins
    Cook Time 25 mins
    Total Time 35 mins
    Course Baking, Dessert
    Cuisine American, British
    Servings 8 slices
    Calories 190 kcal

    Equipment

    • Electric Handheld Mixer
    • Loaf Tin

    Ingredients
     
     

    • 100 g oat biscuits
    • 50 g butter melted
    • 200 g condensed milk ½ a can
    • 60 ml lemon juice from approx. 1.5 lemons
    • 2 eggs medium

    Instructions
     

    • Preheat the oven to 160°C Fan. Line a small baking tray or a loaf tin with baking parchment.
    • In a large mixing bowl, crush oat biscuits with the end of a rolling pin. Add melted butter and mix well. Tip the mixture into a tray and press down with a back of the spoon. Make sure it gets into all four corners of the tin. Bake for 10 minutes.
    • In the meantime, whisk condensed milk, lemon juice and eggs with an electric whisk until fully combined and volume slightly increased (about 2-3 minutes).
    • Pour the lemon mixture on top of the baked oat biscuit base and return to the oven for 15-20 minutes, until the filling sets.
    • Once baked, cool completely at room temperature. Then chill for at least two hours in the fridge before slicing and decorating with icing sugar and lemon zest, if you wish.

    Nutrition

    Calories: 190kcalCarbohydrates: 23gProtein: 5gFat: 9gSaturated Fat: 5gPolyunsaturated Fat: 1gMonounsaturated Fat: 3gTrans Fat: 0.2gCholesterol: 63mgSodium: 88mgPotassium: 163mgFiber: 1gSugar: 14gVitamin A: 283IUVitamin C: 4mgCalcium: 86mgIron: 1mg
    Keyword Easy Lemon Slices, Easy Lemon Squares, Lemon Dessert, Lemon Dessert with Condensed Milk, Lemon Slice, Lemon Slice With Condensed Milk, Lemon Slices, Lemon Slices with Condensed Milk, Lemon Squares
    Tried this recipe?Let us know how it was!
    Pin for Pinterest.

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    Reader Interactions

    Comments

    1. Toni

      February 01, 2021 at 12:40 pm

      5 stars
      This dessert is totally impossible to resist!! Amazing! Thanks for sharing the recipe!

      Reply
      • Ieva

        February 02, 2021 at 9:39 am

        You are most welcome, Toni!

        Reply
    2. Vidya Narayan

      May 15, 2021 at 4:39 pm

      5 stars
      Love citrus based desserts! Had to try them and they were delish!

      Reply
      • Ieva

        May 15, 2021 at 7:39 pm

        Thanks, Vidya! 😍

        Reply
    3. Gina Abernathy

      July 18, 2021 at 12:20 pm

      5 stars
      You had me at lemon. So light, creamy and amazing.

      Reply
      • Ieva

        July 19, 2021 at 9:39 am

        Absolutely! We love how easy they are to make too!

        Reply
    4. Dannii

      November 30, 2021 at 11:58 am

      5 stars
      Any kind of lemon dessert is good with me and these were delicious.

      Reply
      • Ieva

        November 30, 2021 at 8:40 pm

        Thanks! 💗

        Reply
    5. Tavo

      January 10, 2022 at 9:33 am

      5 stars
      the lemon slices came out so good! Super easy and so yummy!

      Reply
    6. Tara

      August 01, 2022 at 12:57 pm

      5 stars
      These lemon slices are like little bars of heaven! I couldn’t believe that they only required 5 ingredients. So easy, too!

      Reply
      • Ieva

        August 02, 2022 at 6:41 am

        Thanks, Tara! We love an easy dessert!

        Reply
    7. Claire

      September 11, 2022 at 12:23 pm

      5 stars
      Love these lemon slices. Just the right amount of lemon!

      Reply
    8. Amanda Wren-Grimwood

      October 16, 2022 at 9:45 am

      5 stars
      Can’t believe these were so easy to make. I have to say they didn’t last long and the lemon flavour was perfect.

      Reply
      • Ieva

        October 17, 2022 at 7:11 am

        Thanks! 💗

        Reply
    9. Ana F.

      December 01, 2022 at 7:38 pm

      5 stars
      I love everything with condensed milk and this lemon dessert was perfect! The family truly enjoyed and can’t wait to make it again. Thanks for the recipe!

      Reply
      • Ieva

        December 02, 2022 at 6:40 am

        What lovely feedback! Thanks so much for trying our recipe! 🙂

        Reply

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    Hi, I am Ieva – the face behind this blog. I live in North Wales with my husband Seb and our golden retriever Sawyer. It’s safe to say that I live and breathe food: from researching and reading about food to creating new recipes and growing vegetables to use in my cooking.  The great thing is, Seb appreciates all the good meals that are also essential at his worst ‘hangry’ moments! Somebody HAS to feed Seb…

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