Are you looking for a fresh dessert? You will love this classic Mary Berry Key Lime Pie Recipe. It is sweet and full of bright citrus flavor. I love making this treat for sunny days. It always brings smiles to the kitchen table.
You do not need rare skills to bake this. Learning how to make Mary Berry Key Lime Pie is very simple. The steps are clean and fast. This yummy Mary Berry Key Lime Pie Recipe is perfect for beginners and expert bakers alike.
Your guests will surely ask for a second slice. This reliable Mary Berry Key Lime Pie Recipe never fails to impress. Let us dive right into the details of this lovely dessert.
What Makes This Recipe Special
The flavor of this pie is a true dream. It blends sweet milk with sharp, sour lime juice. This mix creates a bold contrast that stays exciting. You get a burst of sunshine in every single bite.
The textures are also a big win. The crust is crunchy and full of buttery goodness. The inside filling is smooth, velvety, and thick. A soft whipped cream topping makes it feel like a cloud.
It is one of the easiest pies you can make. The prep work is quick and requires very little effort. You can learn more about classic baking styles at British Baking Recipes. You only need 15 minutes of baking time. It is a stress-free dessert for busy people.

Equipment List
- Mixing bowls: You need these to mix your filling and crush your crunchy biscuits.
- Electric hand whisk: This tool helps you beat the filling until it becomes smooth.
- Zester or fine grater: Use this to peel the green skin from your fresh limes.
- 9-inch loose-bottomed pie tin: This pan holds the crust and lets you remove it easily.
- Rolling pin: Use this heavy tool to crush your biscuits into fine crumbs.
- Plastic freezer bag: Place your biscuits inside this bag before you start crushing them.
- Metal spoon: This helps you press the buttery crumbs firmly into the pie tin.
Ingredients You Need for Mary Berry Key Lime Pie
- Digestive biscuits: These sweet biscuits create the crunchy base for your pie.
- Unsalted butter: Melted butter binds the dry biscuit crumbs together tightly.
- Demerara sugar: This brown sugar adds a deep caramel sweetness to the crust.
- Sweetened condensed milk: This thick milk gives the filling its sweet and rich texture.
- Egg yolks: Large yolks help set the lime filling during the short baking process.
- Fresh key limes: You will use both the sharp juice and the green zest.
- Double cream: Pouring cream makes a fluffy topping when you whip it up.
How to Assemble Mary Berry Key Lime Pie
Step 1:
Place your digestive biscuits inside the large plastic freezer bag. Seal the bag tightly to keep the pieces inside. Crush them with your rolling pin until they look like fine sand.
Step 2:
Melt your unsalted butter in a small pan over low heat. Pour the warm butter into a mixing bowl with your crumbs. Add the demerara sugar and stir the mix until it is wet.
Step 3:
Dump the wet crumbs into your loose-bottomed pie tin. Use the back of a metal spoon to press them down. Make sure the base and sides are fully and evenly covered.
Step 4:
Put the pie tin into your fridge for twenty minutes. This cold time will help the buttery crust become firm and strong. Preheat your kitchen oven to 180°C or 160°C fan now.
Step 5:
Whisk your egg yolks in a large bowl for one minute. Pour in the sweet condensed milk and your fresh lime juice. Add most of the green lime zest but save some for later.
Step 6:
Beat the liquid mixture well until it starts to thicken up. Pour this smooth lime filling over your chilled biscuit crust. Smooth out the top surface with a flexible baking spatula.
Step 7:
Bake the pie in your hot oven for exactly fifteen minutes. The filling should be mostly set but still wobble slightly. Remove it from the oven and let it cool down completely.
Step 8:
Chill the cooled pie in your fridge for two whole hours. Whip your heavy double cream in a clean bowl until soft peaks form. Spread the fluffy cream over the cold pie and top with extra zest.
Recipe Success Tips
- Use fresh lime juice because bottled juice tastes too artificial.
- Chill the crust well so it does not crumble when serving.
- Do not overbake the filling or it will crack and lose moisture.
- Use full-fat condensed milk so the lime pie sets properly.
- Grate the lime gently to avoid the bitter white skin layer.
How To Store Leftover
You can keep your extra pie slices fresh inside the fridge. Put them in an airtight container to keep odors out. The pie will stay delicious for up to three days.
The whipped cream might soften a bit over time. Do not freeze this pie because the texture will change.
Sides & Pairings Suggestions
This tart pie pairs wonderfully with a cup of hot black coffee. The bitter coffee cuts through the rich and sweet condensed milk.
You can also serve it with fresh red raspberries on the side. A small scoop of vanilla bean ice cream is another fantastic option. It adds an extra layer of cool comfort.
Nutritions
| Nutrient | Value per Serving |
| Calories | 340 kcal |
| Total Fat | 18 g |
| Carbohydrates | 38 g |
| Sugars | 29 g |
| Protein | 5 g |
FAQs about Mary Berry Key Lime Pie
Can I use regular limes instead of key limes?
Yes. Regular limes work perfectly fine for this recipe. They offer a great sharp flavor that mimics key limes well.
Why is my key lime pie filling too runny?
You might have used low-fat condensed milk by mistake. Always use full-fat condensed milk so the acid sets the mixture.
Can I make this dessert one day in advance?
Yes. This pie is great for making ahead of time. Keep it covered in the fridge until you are ready to serve.
Do I have to bake the filling?
Yes. Baking for fifteen minutes cooks the raw egg yolks safely. It also helps the pie hold its shape when sliced.
Final Thoughts
This simple dessert is a true star for any special occasion. The bold lime flavor keeps it light and highly refreshing.
It is a historical favorite that home bakers love to share. You can view more dessert inspiration on The Happy Foodie. Grab your ingredients and try this recipe today.
More Amazing Recipes
- Hairy Bikers Banoffee Pie Recipe
- Mary Berry Millionaire Shortbread Recipe
- Ina Garten Green Bean Casserole Recipe
- Martha Stewart Chicken Salad Recipe

Mary Berry Key Lime Pie Recipe
Equipment
- Mixing Bowls
- Electric hand whisk
- Zester or fine grater
- 9-inch loose-bottomed pie tin
- Rolling Pin
- Plastic freezer bag
- Metal Spoon
Ingredients
- 150 g DIGESTIVE BISCUITS
- 65 g UNSALTED BUTTER
- 25 g DEMERARA SUGAR
- 400 g SWEETENED CONDENSED MILK
- 4 large EGG YOLKS
- 4 large KEY LIMES
- 300 ml DOUBLE CREAM
Instructions
- Place your digestive biscuits inside the large plastic freezer bag. Seal the bag tightly to keep the pieces inside. Crush them with your rolling pin until they look like fine sand.
- Melt your unsalted butter in a small pan over low heat. Pour the warm butter into a mixing bowl with your crumbs. Add the demerara sugar and stir the mix until it is wet.
- Dump the wet crumbs into your loose-bottomed pie tin. Use the back of a metal spoon to press them down. Make sure the base and sides are fully and evenly covered.
- Put the pie tin into your fridge for twenty minutes. This cold time will help the buttery crust become firm and strong. Preheat your kitchen oven to 180°C or 160°C fan now.
- Whisk your egg yolks in a large bowl for one minute. Pour in the sweet condensed milk and your fresh lime juice. Add most of the green lime zest but save some for later.
- Beat the liquid mixture well until it starts to thicken up. Pour this smooth lime filling over your chilled biscuit crust. Smooth out the top surface with a flexible baking spatula.
- Bake the pie in your hot oven for exactly fifteen minutes. The filling should be mostly set but still wobble slightly. Remove it from the oven and let it cool down completely.
- Chill the cooled pie in your fridge for two whole hours. Whip your heavy double cream in a clean bowl until soft peaks form. Spread the fluffy cream over the cold pie and top with extra zest.
Notes
- Use fresh lime juice because bottled juice tastes too artificial.
- Chill the crust well so it does not crumble when serving.
- Do not overbake the filling or it will crack and lose moisture.
- Use full-fat condensed milk so the lime pie sets properly.
- Grate the lime gently to avoid the bitter white skin layer.

I’m Bella Rose, and I’m here to rescue your busy weeknights with quick, delicious, and easy family recipes. From comforting classics to simple, seasoned dishes your kids will actually eat, find everyday meal inspiration that saves you time without sacrificing flavor.


















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