Why You’ll Love This Lemon Condensed Milk Fridge Slice
Hey there, dessert lovers! Are you ready for a slice of pure, zesty heaven? This Lemon Condensed Milk Fridge Slice is everything you crave in a sweet treat: tangy, creamy, and utterly addictive. Forget complicated baking – this recipe is ridiculously easy, coming together in a flash. It’s the perfect answer to those spontaneous dessert cravings, impressing guests with minimal effort. Imagine the burst of sunshine in every bite – the vibrant lemon zest singing against the smooth, creamy sweetness of condensed milk, all resting on a buttery biscuit base. The texture is a dream – that delightful crunch giving way to a melt-in-your-mouth creamy center. This isn’t just a dessert; it’s a mood lifter, a celebration of simple pleasures, and a guaranteed crowd-pleaser. You’ll be amazed at how easy it is to create such a sophisticated-tasting dessert. Trust me, your taste buds will thank you!
What You’ll Need
This recipe relies on a few simple yet effective ingredients. Let’s dive in:
- Marie biscuits (digestive biscuits): These classic biscuits provide the perfect crumbly base. Their delicate sweetness complements the lemon beautifully.
- Melted butter: Unsalted butter is best, as it allows you to control the sweetness. It binds the biscuit crumbs together, creating a solid foundation for your dreamy lemon filling.
- Sweetened condensed milk: The star of the show! This creamy, intensely sweet milk provides the luscious base for the lemon filling. Look for a quality brand for the best flavor.
- Lemon juice: Freshly squeezed lemon juice is a must! It delivers the bright, tangy flavor that makes this slice so special. Don’t be shy with the juice!
- Lemon zest: The zest adds a layer of intense lemon flavor and aroma, enhancing the overall taste profile. Use a fine grater to get the most out of your lemon.

Step-by-Step Instructions
Let’s get baking (or rather, assembling!) this delicious fridge slice.
- Prepare the base: Begin by crushing your Marie biscuits. You can do this in a food processor for a finer crumb, or use a sturdy zip-top bag and a rolling pin for a more rustic texture. Aim for a fairly fine crumb, but don’t pulverize them into dust.
- Combine the base ingredients: In a medium bowl, combine the crushed biscuits with your melted butter. Mix thoroughly until all the crumbs are evenly coated. This step ensures that your base will hold its shape and won’t be too crumbly.
- Press into the pan: Firmly press the biscuit mixture into the bottom of a lined 8×8 inch (or similar sized) baking pan. Use the bottom of a measuring cup or glass to create an even layer. Press down firmly to create a compact base; this will prevent it from crumbling when you cut the slices.
- Make the lemon filling: In a separate bowl, whisk together the sweetened condensed milk, lemon juice, and lemon zest until smooth and well combined. Make sure there are no lumps of zest remaining.
- Pour over the base: Carefully pour the lemon filling over the pressed biscuit base, spreading it evenly to ensure an even layer. Use a spatula to smooth the top for a neat finish.
- Chill and set: Cover the pan with plastic wrap and refrigerate for at least 4 hours, or preferably overnight. This allows the slice to set properly and allows the flavors to meld together beautifully. The longer it chills, the firmer and easier to slice it will be.
- Slice and serve: Once chilled, remove the slice from the refrigerator and carefully cut it into squares or bars. Dust with icing sugar (optional) before serving for an extra touch of elegance.
Tip: For an even crispier base, you can lightly bake the biscuit mixture for about 8-10 minutes at 160°C (320°F) before adding the lemon filling. Keep a close eye on it to prevent burning.
Tips for Success
To guarantee a perfect Lemon Condensed Milk Fridge Slice every time, here are a few helpful hints:
- Use good quality ingredients: The taste of this dessert relies heavily on the quality of the condensed milk and lemons. Invest in good-quality ingredients for the best results.
- Don’t over-crush the biscuits: You want a slightly coarse crumb for the base, not fine biscuit dust. A slightly coarser texture provides better binding.
- Press the base firmly: A tightly packed base is crucial for preventing crumbling when slicing. Use a flat-bottomed glass or measuring cup for even pressure.
- Chill thoroughly: Refrigerating for at least 4 hours is key to achieving a firm, set slice. Overnight chilling is ideal for the best results.
- Use a sharp knife: A sharp knife will give you clean, even slices, preventing the slice from crumbling.
Variations to Try
Feeling adventurous? Here are some delicious ways to customize your Lemon Condensed Milk Fridge Slice:
- Berrylicious: Fold in fresh or frozen berries (raspberries, blueberries, or strawberries) into the lemon filling for a burst of fruity flavor.
- Lime Twist: Replace some of the lemon juice with lime juice for a zestier, more tropical twist.
- Chocolate Indulgence: Add some melted dark chocolate to the biscuit base for a decadent chocolate-lemon combination.
- Ginger Zing: Add a teaspoon of grated fresh ginger to the lemon filling for a warm, spicy kick.
- Gluten-Free Option: Substitute gluten-free digestive biscuits for a gluten-free version. Ensure the biscuits are well-crushed for better binding.
Storing and Reheating
This delicious slice keeps well in the refrigerator for up to 3 days. Store it in an airtight container to maintain its freshness and prevent it from drying out. For longer storage, you can freeze the un-sliced fridge slice for up to 2 months. Wrap it tightly in plastic wrap and then foil to protect it from freezer burn. To reheat, thaw overnight in the refrigerator and bring to room temperature before serving. Avoid reheating in the microwave, as this can make the texture soggy.

Frequently Asked Questions
Here are some answers to questions you might have about this recipe:
- Can I use different biscuits? While Marie biscuits are ideal, you can experiment with other buttery biscuits, but ensure they’re not too sweet or crumbly. Graham crackers would work well, too.
- How long does it last? Stored properly in the refrigerator, this fridge slice will last for up to 3 days. Frozen, it will last for up to 2 months.
- Can I make it ahead of time? Absolutely! In fact, making it ahead of time allows the flavors to blend and the slice to set properly. Refrigerate for at least 4 hours, preferably overnight.
- What if I don’t have fresh lemons? While fresh lemons are best for their superior flavor and aroma, you can use bottled lemon juice in a pinch. However, the flavor might be slightly less intense.
- Can I use a different size pan? You can certainly adjust the pan size to suit your needs. Just remember that a larger pan will result in a thinner slice, while a smaller pan will result in a thicker one.
The Final Word
This Lemon Condensed Milk Fridge Slice is the epitome of easy elegance. It’s the perfect dessert for any occasion – from a casual weeknight treat to a sophisticated gathering. The combination of the buttery biscuit base, tangy lemon filling, and creamy condensed milk is simply irresistible. It’s a dessert that’s quick to make, yet delivers maximum flavor and satisfaction. So, what are you waiting for? Give this recipe a try and let me know what you think in the comments below! Don’t forget to rate the recipe and share your photos on social media using #LemonCondensedMilkFridgeSlice. Happy baking!

Lemon Condensed Milk Fridge Slice
Equipment
- 8×8 inch baking dish Or similar sized dish
- Mixing bowls
Ingredients
Crust
- 1 packet Marie biscuits crushed
- 100 g Melted butter
Lemon Filling
- 1 can Sweetened condensed milk
- 0.25 cup Lemon juice
- 1 Lemon zest
Instructions
- Crush the Marie biscuits into fine crumbs.
- Combine the crushed biscuits with the melted butter in a bowl and mix well.
- Press the biscuit mixture firmly into the bottom of the prepared baking dish.
- In a separate bowl, whisk together the sweetened condensed milk, lemon juice, and lemon zest until smooth.
- Pour the lemon mixture over the biscuit base and spread evenly.
- Refrigerate for at least 4 hours, or preferably overnight, to allow the slice to set.
- Once set, cut into squares and serve.